diff --git a/thaw/src/auto_complete/auto-complete.css b/thaw/src/auto_complete/auto-complete.css
index 4ca4cd6..16bb61c 100644
--- a/thaw/src/auto_complete/auto-complete.css
+++ b/thaw/src/auto_complete/auto-complete.css
@@ -18,3 +18,31 @@
 .thaw-auto-complete__menu-item--selected {
     background-color: var(--thaw-background-color-hover);
 }
+
+.thaw-auto-complete__menu.fade-in-scale-up-transition-leave-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0.4, 0, 1, 1),
+        transform 0.2s cubic-bezier(0.4, 0, 1, 1),
+        background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.thaw-auto-complete__menu.fade-in-scale-up-transition-enter-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0, 0, 0.2, 1),
+        transform 0.2s cubic-bezier(0, 0, 0.2, 1),
+        background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.thaw-auto-complete__menu.fade-in-scale-up-transition-enter-from,
+.thaw-auto-complete__menu.fade-in-scale-up-transition-leave-to {
+    opacity: 0;
+    transform: scale(0.9);
+}
+
+.thaw-auto-complete__menu.fade-in-scale-up-transition-leave-from,
+.thaw-auto-complete__menu.fade-in-scale-up-transition-enter-to {
+    opacity: 1;
+    transform: scale(1);
+}
diff --git a/thaw/src/auto_complete/mod.rs b/thaw/src/auto_complete/mod.rs
index 5c85f77..30e308c 100644
--- a/thaw/src/auto_complete/mod.rs
+++ b/thaw/src/auto_complete/mod.rs
@@ -1,7 +1,7 @@
 mod theme;
 
 use crate::{
-    components::{Binder, Follower, FollowerPlacement, FollowerWidth},
+    components::{Binder, CSSTransition, Follower, FollowerPlacement, FollowerWidth},
     use_theme,
     utils::{class_list::class_list, mount_style, Model, OptionalProp, StoredMaybeSignal},
     ComponentRef, Input, InputPrefix, InputRef, InputSuffix, Theme,
@@ -196,69 +196,76 @@ pub fn AutoComplete(
                 placement=FollowerPlacement::BottomStart
                 width=FollowerWidth::Target
             >
-                <div
-                    class="thaw-auto-complete__menu"
-                    style=move || menu_css_vars.get()
-                    ref=menu_ref
+                <CSSTransition
+                    node_ref=menu_ref
+                    name="fade-in-scale-up-transition"
+                    show=is_show_menu
+                    let:display
                 >
+                    <div
+                        class="thaw-auto-complete__menu"
+                        style=move || display.get().map(|d| d.to_string()).unwrap_or_else(|| menu_css_vars.get())
+                        ref=menu_ref
+                    >
 
-                    {move || {
-                        options
-                            .get()
-                            .into_iter()
-                            .enumerate()
-                            .map(|(index, v)| {
-                                let AutoCompleteOption { value: option_value, label } = v;
-                                let menu_item_ref = create_node_ref::<html::Div>();
-                                let on_click = move |_| {
-                                    select_value(option_value.clone());
-                                };
-                                let on_mouseenter = move |_| {
-                                    select_option_index.set(Some(index));
-                                };
-                                let on_mousedown = move |ev: ev::MouseEvent| {
-                                    ev.prevent_default();
-                                };
-                                create_effect(move |_| {
-                                    if Some(index) == select_option_index.get() {
-                                        if !is_show_menu.get() {
-                                            return;
-                                        }
-                                        if let Some(menu_item_ref) = menu_item_ref.get() {
-                                            let menu_ref = menu_ref.get().unwrap();
-                                            let menu_rect = menu_ref.get_bounding_client_rect();
-                                            let item_rect = menu_item_ref.get_bounding_client_rect();
-                                            if item_rect.y() < menu_rect.y() {
-                                                menu_item_ref.scroll_into_view_with_bool(true);
-                                            } else if item_rect.y() + item_rect.height()
-                                                > menu_rect.y() + menu_rect.height()
-                                            {
-                                                menu_item_ref.scroll_into_view_with_bool(false);
+                        {move || {
+                            options
+                                .get()
+                                .into_iter()
+                                .enumerate()
+                                .map(|(index, v)| {
+                                    let AutoCompleteOption { value: option_value, label } = v;
+                                    let menu_item_ref = create_node_ref::<html::Div>();
+                                    let on_click = move |_| {
+                                        select_value(option_value.clone());
+                                    };
+                                    let on_mouseenter = move |_| {
+                                        select_option_index.set(Some(index));
+                                    };
+                                    let on_mousedown = move |ev: ev::MouseEvent| {
+                                        ev.prevent_default();
+                                    };
+                                    create_effect(move |_| {
+                                        if Some(index) == select_option_index.get() {
+                                            if !is_show_menu.get() {
+                                                return;
+                                            }
+                                            if let Some(menu_item_ref) = menu_item_ref.get() {
+                                                let menu_ref = menu_ref.get().unwrap();
+                                                let menu_rect = menu_ref.get_bounding_client_rect();
+                                                let item_rect = menu_item_ref.get_bounding_client_rect();
+                                                if item_rect.y() < menu_rect.y() {
+                                                    menu_item_ref.scroll_into_view_with_bool(true);
+                                                } else if item_rect.y() + item_rect.height()
+                                                    > menu_rect.y() + menu_rect.height()
+                                                {
+                                                    menu_item_ref.scroll_into_view_with_bool(false);
+                                                }
                                             }
                                         }
+                                    });
+                                    view! {
+                                        <div
+                                            class="thaw-auto-complete__menu-item"
+                                            class=(
+                                                "thaw-auto-complete__menu-item--selected",
+                                                move || Some(index) == select_option_index.get(),
+                                            )
+
+                                            on:click=on_click
+                                            on:mousedown=on_mousedown
+                                            on:mouseenter=on_mouseenter
+                                            ref=menu_item_ref
+                                        >
+                                            {label}
+                                        </div>
                                     }
-                                });
-                                view! {
-                                    <div
-                                        class="thaw-auto-complete__menu-item"
-                                        class=(
-                                            "thaw-auto-complete__menu-item--selected",
-                                            move || Some(index) == select_option_index.get(),
-                                        )
+                                })
+                                .collect_view()
+                        }}
 
-                                        on:click=on_click
-                                        on:mousedown=on_mousedown
-                                        on:mouseenter=on_mouseenter
-                                        ref=menu_item_ref
-                                    >
-                                        {label}
-                                    </div>
-                                }
-                            })
-                            .collect_view()
-                    }}
-
-                </div>
+                    </div>
+                </CSSTransition>
             </Follower>
         </Binder>
     }
diff --git a/thaw/src/color_picker/color-picker.css b/thaw/src/color_picker/color-picker.css
index ad01a76..31e4528 100644
--- a/thaw/src/color_picker/color-picker.css
+++ b/thaw/src/color_picker/color-picker.css
@@ -89,3 +89,27 @@
     border: 2px solid white;
     cursor: pointer;
 }
+
+.thaw-color-picker-popover.fade-in-scale-up-transition-leave-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0.4, 0, 1, 1),
+        transform 0.2s cubic-bezier(0.4, 0, 1, 1);
+}
+
+.thaw-color-picker-popover.fade-in-scale-up-transition-enter-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0, 0, 0.2, 1),
+        transform 0.2s cubic-bezier(0, 0, 0.2, 1);
+}
+
+.thaw-color-picker-popover.fade-in-scale-up-transition-enter-from,
+.thaw-color-picker-popover.fade-in-scale-up-transition-leave-to {
+    opacity: 0;
+    transform: scale(0.9);
+}
+
+.thaw-color-picker-popover.fade-in-scale-up-transition-leave-from,
+.thaw-color-picker-popover.fade-in-scale-up-transition-enter-to {
+    opacity: 1;
+    transform: scale(1);
+}
diff --git a/thaw/src/color_picker/mod.rs b/thaw/src/color_picker/mod.rs
index 3fb09e0..bde1646 100644
--- a/thaw/src/color_picker/mod.rs
+++ b/thaw/src/color_picker/mod.rs
@@ -5,7 +5,7 @@ pub use color::*;
 pub use theme::ColorPickerTheme;
 
 use crate::{
-    components::{Binder, Follower, FollowerPlacement},
+    components::{Binder, CSSTransition, Follower, FollowerPlacement},
     use_theme,
     utils::{class_list::class_list, mount_style, Model, OptionalProp},
     Theme,
@@ -152,15 +152,21 @@ pub fn ColorPicker(
                 </div>
             </div>
             <Follower slot show=is_show_popover placement=FollowerPlacement::BottomStart>
-                <div
-                    class="thaw-color-picker-popover"
-                    ref=popover_ref
-                    style=move || popover_css_vars.get()
+                <CSSTransition
+                    node_ref=popover_ref name="fade-in-scale-up-transition"
+                    show=is_show_popover
+                    let:display
                 >
+                    <div
+                        class="thaw-color-picker-popover"
+                        ref=popover_ref
+                        style=move || display.get().map(|d| d.to_string()).unwrap_or_else(|| popover_css_vars.get())
+                    >
 
-                    <ColorPanel hue=hue.read_only() sv/>
-                    <HueSlider hue/>
-                </div>
+                        <ColorPanel hue=hue.read_only() sv/>
+                        <HueSlider hue/>
+                    </div>
+                </CSSTransition>
             </Follower>
         </Binder>
     }
diff --git a/thaw/src/components/binder/get_placement_style.rs b/thaw/src/components/binder/get_placement_style.rs
index 5bf341a..c5ba749 100644
--- a/thaw/src/components/binder/get_placement_style.rs
+++ b/thaw/src/components/binder/get_placement_style.rs
@@ -36,6 +36,23 @@ impl FollowerPlacement {
             Self::BottomEnd => "bottom-end",
         }
     }
+
+    pub fn transform_origin(&self) -> &'static str {
+        match self {
+            Self::Top => "bottom center",
+            Self::Bottom => "top center",
+            Self::Left => "center right",
+            Self::Right => "center left",
+            Self::TopStart => "bottom left",
+            Self::TopEnd => "bottom right",
+            Self::LeftStart => "top right",
+            Self::LeftEnd => "bottom right",
+            Self::RightStart => "top left",
+            Self::RightEnd => "bottom left",
+            Self::BottomStart => "top left",
+            Self::BottomEnd => "top right",
+        }
+    }
 }
 
 pub struct FollowerPlacementOffset {
diff --git a/thaw/src/components/binder/mod.rs b/thaw/src/components/binder/mod.rs
index 020f15c..b73ff20 100644
--- a/thaw/src/components/binder/mod.rs
+++ b/thaw/src/components/binder/mod.rs
@@ -34,16 +34,15 @@ pub enum FollowerWidth {
 
 impl Copy for FollowerWidth {}
 
-
 /// # Tracking popup
 ///
 /// ```rust
 /// use crate::components::{Binder, Follower, FollowerPlacement};
 /// use leptos::*;
-/// 
+///
 /// let div_ref= NodeRef::new();
 /// let show = RwSignal::new(false);
-/// 
+///
 /// view! {
 ///     <Binder target_ref=div_ref>
 ///        <div ref=div_ref>
@@ -58,7 +57,8 @@ impl Copy for FollowerWidth {}
 #[component]
 pub fn Binder<El: ElementDescriptor + Clone + 'static>(
     /// Used to track DOM locations
-    #[prop(into)] target_ref: NodeRef<El>,
+    #[prop(into)]
+    target_ref: NodeRef<El>,
     /// Content for pop-up display
     follower: Follower,
     children: Children,
@@ -197,6 +197,10 @@ fn FollowerContainer<El: ElementDescriptor + Clone + 'static>(
         }) = get_follower_placement_offset(placement, target_rect, content_rect)
         {
             placement_str.set(placement.as_str());
+            style.push_str(&format!(
+                "transform-origin: {};",
+                placement.transform_origin()
+            ));
             style.push_str(&format!(
                 "transform: translateX({left}px) translateY({top}px) {transform};"
             ));
@@ -207,15 +211,14 @@ fn FollowerContainer<El: ElementDescriptor + Clone + 'static>(
         content_style.set(style);
     });
 
-    let is_show = create_memo(move |_| {
+    Effect::new(move |_| {
         if target_ref.get().is_none() {
-            return false;
+            return;
         }
         if content_ref.get().is_none() {
-            return false;
+            return;
         }
-        let is_show = show.get();
-        if is_show {
+        if show.get() {
             request_animation_frame(move || {
                 sync_position.call(());
             });
@@ -225,21 +228,17 @@ fn FollowerContainer<El: ElementDescriptor + Clone + 'static>(
             remove_scroll_listener.call(());
             remove_resize_listener.call(());
         }
-        is_show
     });
 
     let children = with_hydration_off(|| {
-        html::div()
-            .classes("thaw-binder-follower-container")
-            .style("display", move || (!is_show.get()).then_some("none"))
-            .child(
-                html::div()
-                    .classes("thaw-binder-follower-content")
-                    .attr("data-thaw-placement", move || placement_str.get())
-                    .node_ref(content_ref)
-                    .attr("style", move || content_style.get())
-                    .child(children()),
-            )
+        html::div().classes("thaw-binder-follower-container").child(
+            html::div()
+                .classes("thaw-binder-follower-content")
+                .attr("data-thaw-placement", move || placement_str.get())
+                .node_ref(content_ref)
+                .attr("style", move || content_style.get())
+                .child(children()),
+        )
     });
 
     view! { <Teleport element=children/> }
diff --git a/thaw/src/date_picker/date-picker.css b/thaw/src/date_picker/date-picker.css
index 2a90402..d00891b 100644
--- a/thaw/src/date_picker/date-picker.css
+++ b/thaw/src/date_picker/date-picker.css
@@ -172,3 +172,27 @@
     text-align: center;
     border-radius: 3px;
 }
+
+.thaw-date-picker-panel.fade-in-scale-up-transition-leave-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0.4, 0, 1, 1),
+        transform 0.2s cubic-bezier(0.4, 0, 1, 1);
+}
+
+.thaw-date-picker-panel.fade-in-scale-up-transition-enter-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0, 0, 0.2, 1),
+        transform 0.2s cubic-bezier(0, 0, 0.2, 1);
+}
+
+.thaw-date-picker-panel.fade-in-scale-up-transition-enter-from,
+.thaw-date-picker-panel.fade-in-scale-up-transition-leave-to {
+    opacity: 0;
+    transform: scale(0.9);
+}
+
+.thaw-date-picker-panel.fade-in-scale-up-transition-leave-from,
+.thaw-date-picker-panel.fade-in-scale-up-transition-enter-to {
+    opacity: 1;
+    transform: scale(1);
+}
diff --git a/thaw/src/date_picker/mod.rs b/thaw/src/date_picker/mod.rs
index b0b2872..b140f2d 100644
--- a/thaw/src/date_picker/mod.rs
+++ b/thaw/src/date_picker/mod.rs
@@ -87,6 +87,7 @@ pub fn DatePicker(
                     close_panel
                     selected_date=panel_selected_date
                     comp_ref=panel_ref
+                    is_show_panel
                 />
             </Follower>
         </Binder>
diff --git a/thaw/src/date_picker/panel/mod.rs b/thaw/src/date_picker/panel/mod.rs
index 591ece0..f5a6ac7 100644
--- a/thaw/src/date_picker/panel/mod.rs
+++ b/thaw/src/date_picker/panel/mod.rs
@@ -3,6 +3,7 @@ mod month_panel;
 mod year_panel;
 
 use crate::{
+    components::CSSTransition,
     use_theme,
     utils::{now_date, ComponentRef},
     Theme,
@@ -18,6 +19,7 @@ pub fn Panel(
     selected_date: RwSignal<Option<NaiveDate>>,
     date_picker_ref: NodeRef<html::Div>,
     close_panel: Callback<Option<NaiveDate>>,
+    #[prop(into)] is_show_panel: MaybeSignal<bool>,
     #[prop(optional)] comp_ref: ComponentRef<PanelRef>,
 ) -> impl IntoView {
     let theme = use_theme(Theme::light);
@@ -91,25 +93,36 @@ pub fn Panel(
     });
 
     view! {
-        <div class="thaw-date-picker-panel" style=move || css_vars.get() ref=panel_ref>
+        <CSSTransition
+            node_ref=panel_ref
+            name="fade-in-scale-up-transition"
+            show=is_show_panel
+            let:display
+        >
+            <div
+                class="thaw-date-picker-panel"
+                style=move || display.get().map(|d| d.to_string()).unwrap_or_else(|| css_vars.get())
+                ref=panel_ref
+            >
 
-            {move || {
-                match panel_variant.get() {
-                    PanelVariant::Date => {
-                        view! {
-                            <DatePanel value=selected_date show_date close_panel panel_variant/>
+                {move || {
+                    match panel_variant.get() {
+                        PanelVariant::Date => {
+                            view! {
+                                <DatePanel value=selected_date show_date close_panel panel_variant/>
+                            }
+                        }
+                        PanelVariant::Month => {
+                            view! { <MonthPanel date_panel_show_date=show_date panel_variant/> }
+                        }
+                        PanelVariant::Year => {
+                            view! { <YearPanel date_panel_show_date=show_date panel_variant/> }
                         }
                     }
-                    PanelVariant::Month => {
-                        view! { <MonthPanel date_panel_show_date=show_date panel_variant/> }
-                    }
-                    PanelVariant::Year => {
-                        view! { <YearPanel date_panel_show_date=show_date panel_variant/> }
-                    }
-                }
-            }}
+                }}
 
-        </div>
+            </div>
+        </CSSTransition>
     }
 }
 
diff --git a/thaw/src/popover/mod.rs b/thaw/src/popover/mod.rs
index ea870fd..43318ed 100644
--- a/thaw/src/popover/mod.rs
+++ b/thaw/src/popover/mod.rs
@@ -1,14 +1,15 @@
 mod theme;
 
+pub use theme::PopoverTheme;
+
 use crate::{
-    components::{Binder, Follower, FollowerPlacement},
+    components::{Binder, CSSTransition, Follower, FollowerPlacement},
     use_theme,
     utils::{add_event_listener, class_list::class_list, mount_style, OptionalProp},
     Theme,
 };
 use leptos::{leptos_dom::helpers::TimeoutHandle, *};
 use std::time::Duration;
-pub use theme::PopoverTheme;
 
 #[slot]
 pub struct PopoverTrigger {
@@ -112,6 +113,7 @@ pub fn Popover(
         children: trigger_children,
     } = popover_trigger;
 
+    let follower_enabled = RwSignal::new(false);
     view! {
         <Binder target_ref>
             <div
@@ -122,19 +124,27 @@ pub fn Popover(
             >
                 {trigger_children()}
             </div>
-            <Follower slot show=is_show_popover placement>
-                <div
-                    class="thaw-popover"
-                    style=move || css_vars.get()
-                    ref=popover_ref
-                    on:mouseenter=on_mouse_enter
-                    on:mouseleave=on_mouse_leave
+            <Follower slot show=follower_enabled placement>
+                <CSSTransition
+                    node_ref=popover_ref name="popover-transition"
+                    show=is_show_popover
+                    on_enter=move |_| follower_enabled.set(true)
+                    on_after_leave=move |_| follower_enabled.set(false)
+                    let:display
                 >
-                    <div class=class.map(|c| move || c.get())>{children()}</div>
-                    <div class="thaw-popover__angle-container">
-                        <div class="thaw-popover__angle"></div>
+                    <div
+                        class="thaw-popover"
+                        style=move || display.get().map(|d| d.to_string()).unwrap_or_else(|| css_vars.get())
+                        ref=popover_ref
+                        on:mouseenter=on_mouse_enter
+                        on:mouseleave=on_mouse_leave
+                    >
+                        <div class=class.map(|c| move || c.get())>{children()}</div>
+                        <div class="thaw-popover__angle-container">
+                            <div class="thaw-popover__angle"></div>
+                        </div>
                     </div>
-                </div>
+                </CSSTransition>
             </Follower>
         </Binder>
     }
diff --git a/thaw/src/popover/popover.css b/thaw/src/popover/popover.css
index 57adf03..a9b955d 100644
--- a/thaw/src/popover/popover.css
+++ b/thaw/src/popover/popover.css
@@ -3,6 +3,7 @@
     padding: 8px 14px;
     background-color: var(--thaw-background-color);
     border-radius: 3px;
+    transform-origin: inherit;
 }
 
 .thaw-popover-trigger {
@@ -138,3 +139,31 @@
     top: initial;
     bottom: 7px;
 }
+
+.thaw-popover.popover-transition-enter-from,
+.thaw-popover.popover-transition-leave-to {
+    opacity: 0;
+    transform: scale(0.85);
+}
+
+.thaw-popover.popover-transition-enter-to,
+.thaw-popover.popover-transition-leave-from {
+    transform: scale(1);
+    opacity: 1;
+}
+
+.thaw-popover.popover-transition-enter-active {
+    transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        opacity 0.15s cubic-bezier(0, 0, 0.2, 1),
+        transform 0.15s cubic-bezier(0, 0, 0.2, 1);
+}
+
+.thaw-popover.popover-transition-leave-active {
+    transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        opacity 0.15s cubic-bezier(0.4, 0, 1, 1),
+        transform 0.15s cubic-bezier(0.4, 0, 1, 1);
+}
diff --git a/thaw/src/select/mod.rs b/thaw/src/select/mod.rs
index f3026d6..659e85d 100644
--- a/thaw/src/select/mod.rs
+++ b/thaw/src/select/mod.rs
@@ -1,7 +1,7 @@
 mod theme;
 
 use crate::{
-    components::{Binder, Follower, FollowerPlacement, FollowerWidth},
+    components::{Binder, CSSTransition, Follower, FollowerPlacement, FollowerWidth},
     theme::use_theme,
     utils::{class_list::class_list, mount_style, Model, OptionalProp},
     Theme,
@@ -126,34 +126,45 @@ where
                 placement=FollowerPlacement::BottomStart
                 width=FollowerWidth::Target
             >
-                <div class="thaw-select-menu" style=move || menu_css_vars.get() ref=menu_ref>
-                    <For
-                        each=move || options.get()
-                        key=move |item| item.value.clone()
-                        children=move |item| {
-                            let item = store_value(item);
-                            let onclick = move |_| {
-                                let SelectOption { value: item_value, label: _ } = item.get_value();
-                                value.set(Some(item_value));
-                                is_show_menu.set(false);
-                            };
-                            view! {
-                                <div
-                                    class="thaw-select-menu__item"
-                                    class=(
-                                        "thaw-select-menu__item-selected",
-                                        move || value.get() == Some(item.get_value().value),
-                                    )
+                <CSSTransition
+                    node_ref=menu_ref
+                    name="fade-in-scale-up-transition"
+                    show=is_show_menu
+                    let:display
+                >
+                    <div
+                        class="thaw-select-menu"
+                        style=move || display.get().map(|d| d.to_string()).unwrap_or_else(|| menu_css_vars.get())
+                        ref=menu_ref
+                    >
+                        <For
+                            each=move || options.get()
+                            key=move |item| item.value.clone()
+                            children=move |item| {
+                                let item = store_value(item);
+                                let onclick = move |_| {
+                                    let SelectOption { value: item_value, label: _ } = item.get_value();
+                                    value.set(Some(item_value));
+                                    is_show_menu.set(false);
+                                };
+                                view! {
+                                    <div
+                                        class="thaw-select-menu__item"
+                                        class=(
+                                            "thaw-select-menu__item-selected",
+                                            move || value.get() == Some(item.get_value().value),
+                                        )
 
-                                    on:click=onclick
-                                >
-                                    {item.get_value().label}
-                                </div>
+                                        on:click=onclick
+                                    >
+                                        {item.get_value().label}
+                                    </div>
+                                }
                             }
-                        }
-                    />
+                        />
 
-                </div>
+                    </div>
+                </CSSTransition>
             </Follower>
         </Binder>
     }
diff --git a/thaw/src/select/select.css b/thaw/src/select/select.css
index 702454f..5a61d03 100644
--- a/thaw/src/select/select.css
+++ b/thaw/src/select/select.css
@@ -42,3 +42,31 @@
 .thaw-select-menu__item-selected {
     color: var(--thaw-font-color-selected);
 }
+
+.thaw-select-menu.fade-in-scale-up-transition-leave-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0.4, 0, 1, 1),
+        transform 0.2s cubic-bezier(0.4, 0, 1, 1),
+        background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.thaw-select-menu.fade-in-scale-up-transition-enter-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0, 0, 0.2, 1),
+        transform 0.2s cubic-bezier(0, 0, 0.2, 1),
+        background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
+        box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.thaw-select-menu.fade-in-scale-up-transition-enter-from,
+.thaw-select-menu.fade-in-scale-up-transition-leave-to {
+    opacity: 0;
+    transform: scale(0.9);
+}
+
+.thaw-select-menu.fade-in-scale-up-transition-leave-from,
+.thaw-select-menu.fade-in-scale-up-transition-enter-to {
+    opacity: 1;
+    transform: scale(1);
+}
diff --git a/thaw/src/time_picker/mod.rs b/thaw/src/time_picker/mod.rs
index fcb38b3..75054f8 100644
--- a/thaw/src/time_picker/mod.rs
+++ b/thaw/src/time_picker/mod.rs
@@ -3,7 +3,7 @@ mod theme;
 pub use theme::TimePickerTheme;
 
 use crate::{
-    components::{Binder, Follower, FollowerPlacement},
+    components::{Binder, CSSTransition, Follower, FollowerPlacement},
     use_theme,
     utils::{mount_style, ComponentRef, Model, OptionalProp},
     Button, ButtonSize, ButtonVariant, Icon, Input, InputSuffix, SignalWatch, Theme,
@@ -86,6 +86,7 @@ pub fn TimePicker(
                     selected_time=panel_selected_time
                     close_panel
                     time_picker_ref
+                    is_show_panel
                     comp_ref=panel_ref
                 />
             </Follower>
@@ -98,6 +99,7 @@ fn Panel(
     selected_time: RwSignal<Option<NaiveTime>>,
     time_picker_ref: NodeRef<html::Div>,
     close_panel: Callback<Option<NaiveTime>>,
+    #[prop(into)] is_show_panel: MaybeSignal<bool>,
     comp_ref: ComponentRef<PanelRef>,
 ) -> impl IntoView {
     let theme = use_theme(Theme::light);
@@ -173,96 +175,107 @@ fn Panel(
     });
 
     view! {
-        <div class="thaw-time-picker-panel" style=move || css_vars.get() ref=panel_ref>
-            <div class="thaw-time-picker-panel__time">
-                <div class="thaw-time-picker-panel__time-hour" ref=hour_ref>
+        <CSSTransition
+            node_ref=panel_ref
+            name="fade-in-scale-up-transition"
+            show=is_show_panel
+            let:display
+        >
+            <div
+                class="thaw-time-picker-panel"
+                style=move || display.get().map(|d| d.to_string()).unwrap_or_else(|| css_vars.get())
+                ref=panel_ref
+            >
+                <div class="thaw-time-picker-panel__time">
+                    <div class="thaw-time-picker-panel__time-hour" ref=hour_ref>
 
-                    {(0..24)
-                        .map(|hour| {
-                            let comp_ref = ComponentRef::<PanelTimeItemRef>::default();
-                            let on_click = move |_| {
-                                selected_time
-                                    .update(move |time| {
-                                        *time = if let Some(time) = time {
-                                            time.with_hour(hour)
-                                        } else {
-                                            NaiveTime::from_hms_opt(hour, 0, 0)
-                                        }
-                                    });
-                                comp_ref.get_untracked().unwrap().scroll_into_view();
-                            };
-                            let is_selected = Memo::new(move |_| {
-                                selected_time.get().map_or(false, |v| v.hour() == hour)
-                            });
-                            view! {
-                                <PanelTimeItem value=hour on:click=on_click is_selected comp_ref/>
-                            }
-                        })
-                        .collect_view()}
-                    <div class="thaw-time-picker-panel__time-padding"></div>
+                        {(0..24)
+                            .map(|hour| {
+                                let comp_ref = ComponentRef::<PanelTimeItemRef>::default();
+                                let on_click = move |_| {
+                                    selected_time
+                                        .update(move |time| {
+                                            *time = if let Some(time) = time {
+                                                time.with_hour(hour)
+                                            } else {
+                                                NaiveTime::from_hms_opt(hour, 0, 0)
+                                            }
+                                        });
+                                    comp_ref.get_untracked().unwrap().scroll_into_view();
+                                };
+                                let is_selected = Memo::new(move |_| {
+                                    selected_time.get().map_or(false, |v| v.hour() == hour)
+                                });
+                                view! {
+                                    <PanelTimeItem value=hour on:click=on_click is_selected comp_ref/>
+                                }
+                            })
+                            .collect_view()}
+                        <div class="thaw-time-picker-panel__time-padding"></div>
+                    </div>
+                    <div class="thaw-time-picker-panel__time-minute" ref=minute_ref>
+
+                        {(0..60)
+                            .map(|minute| {
+                                let comp_ref = ComponentRef::<PanelTimeItemRef>::default();
+                                let on_click = move |_| {
+                                    selected_time
+                                        .update(move |time| {
+                                            *time = if let Some(time) = time {
+                                                time.with_minute(minute)
+                                            } else {
+                                                NaiveTime::from_hms_opt(now_time().hour(), minute, 0)
+                                            }
+                                        });
+                                    comp_ref.get_untracked().unwrap().scroll_into_view();
+                                };
+                                let is_selected = Memo::new(move |_| {
+                                    selected_time.get().map_or(false, |v| v.minute() == minute)
+                                });
+                                view! {
+                                    <PanelTimeItem value=minute on:click=on_click is_selected comp_ref/>
+                                }
+                            })
+                            .collect_view()}
+                        <div class="thaw-time-picker-panel__time-padding"></div>
+                    </div>
+                    <div class="thaw-time-picker-panel__time-second" ref=second_ref>
+
+                        {(0..60)
+                            .map(|second| {
+                                let comp_ref = ComponentRef::<PanelTimeItemRef>::default();
+                                let on_click = move |_| {
+                                    selected_time
+                                        .update(move |time| {
+                                            *time = if let Some(time) = time {
+                                                time.with_second(second)
+                                            } else {
+                                                now_time().with_second(second)
+                                            }
+                                        });
+                                    comp_ref.get_untracked().unwrap().scroll_into_view();
+                                };
+                                let is_selected = Memo::new(move |_| {
+                                    selected_time.get().map_or(false, |v| v.second() == second)
+                                });
+                                view! {
+                                    <PanelTimeItem value=second on:click=on_click is_selected comp_ref/>
+                                }
+                            })
+                            .collect_view()}
+                        <div class="thaw-time-picker-panel__time-padding"></div>
+                    </div>
                 </div>
-                <div class="thaw-time-picker-panel__time-minute" ref=minute_ref>
-
-                    {(0..60)
-                        .map(|minute| {
-                            let comp_ref = ComponentRef::<PanelTimeItemRef>::default();
-                            let on_click = move |_| {
-                                selected_time
-                                    .update(move |time| {
-                                        *time = if let Some(time) = time {
-                                            time.with_minute(minute)
-                                        } else {
-                                            NaiveTime::from_hms_opt(now_time().hour(), minute, 0)
-                                        }
-                                    });
-                                comp_ref.get_untracked().unwrap().scroll_into_view();
-                            };
-                            let is_selected = Memo::new(move |_| {
-                                selected_time.get().map_or(false, |v| v.minute() == minute)
-                            });
-                            view! {
-                                <PanelTimeItem value=minute on:click=on_click is_selected comp_ref/>
-                            }
-                        })
-                        .collect_view()}
-                    <div class="thaw-time-picker-panel__time-padding"></div>
-                </div>
-                <div class="thaw-time-picker-panel__time-second" ref=second_ref>
-
-                    {(0..60)
-                        .map(|second| {
-                            let comp_ref = ComponentRef::<PanelTimeItemRef>::default();
-                            let on_click = move |_| {
-                                selected_time
-                                    .update(move |time| {
-                                        *time = if let Some(time) = time {
-                                            time.with_second(second)
-                                        } else {
-                                            now_time().with_second(second)
-                                        }
-                                    });
-                                comp_ref.get_untracked().unwrap().scroll_into_view();
-                            };
-                            let is_selected = Memo::new(move |_| {
-                                selected_time.get().map_or(false, |v| v.second() == second)
-                            });
-                            view! {
-                                <PanelTimeItem value=second on:click=on_click is_selected comp_ref/>
-                            }
-                        })
-                        .collect_view()}
-                    <div class="thaw-time-picker-panel__time-padding"></div>
+                <div class="thaw-time-picker-panel__footer">
+                    <Button variant=ButtonVariant::Outlined size=ButtonSize::Tiny on_click=now>
+                        "Now"
+                    </Button>
+                    <Button size=ButtonSize::Tiny on_click=ok>
+                        "OK"
+                    </Button>
                 </div>
             </div>
-            <div class="thaw-time-picker-panel__footer">
-                <Button variant=ButtonVariant::Outlined size=ButtonSize::Tiny on_click=now>
-                    "Now"
-                </Button>
-                <Button size=ButtonSize::Tiny on_click=ok>
-                    "OK"
-                </Button>
-            </div>
-        </div>
+        </CSSTransition>
     }
 }
 
diff --git a/thaw/src/time_picker/time-picker.css b/thaw/src/time_picker/time-picker.css
index 7c22948..7ec9a00 100644
--- a/thaw/src/time_picker/time-picker.css
+++ b/thaw/src/time_picker/time-picker.css
@@ -51,3 +51,27 @@
     align-items: center;
     border-top: 1px solid var(--thaw-item-border-color);
 }
+
+.thaw-time-picker-panel.fade-in-scale-up-transition-leave-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0.4, 0, 1, 1),
+        transform 0.2s cubic-bezier(0.4, 0, 1, 1);
+}
+
+.thaw-time-picker-panel.fade-in-scale-up-transition-enter-active {
+    transform-origin: inherit;
+    transition: opacity 0.2s cubic-bezier(0, 0, 0.2, 1),
+        transform 0.2s cubic-bezier(0, 0, 0.2, 1);
+}
+
+.thaw-time-picker-panel.fade-in-scale-up-transition-enter-from,
+.thaw-time-picker-panel.fade-in-scale-up-transition-leave-to {
+    opacity: 0;
+    transform: scale(0.9);
+}
+
+.thaw-time-picker-panel.fade-in-scale-up-transition-leave-from,
+.thaw-time-picker-panel.fade-in-scale-up-transition-enter-to {
+    opacity: 1;
+    transform: scale(1);
+}