diff --git a/src/App.svelte b/src/App.svelte
index ecdf4e0..dd6ece5 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -35,6 +35,7 @@
       bootstrap5Plugin
     ],
     locale: frLocale,
+    allDayContent: '',
     headerToolbar: {
       left: 'prev,next today',
       center: 'title',
@@ -48,6 +49,7 @@
       openModal = true;
       event.set(info.event);
     },
+    titleFormat: { year: '2-digit', month: 'numeric', day: 'numeric' },
     events: [],
     themeSystem: 'bootstrap5'
   });
@@ -82,13 +84,16 @@
 
 <div class="app-container">
   <h1 class="title">Calendrier de la vie étudiante à l'ENS</h1>
-  <div style="height: 100%; display: flex;">
-    <FilterBar {calendarTree} bind:selected={selectedCalendars} />
-    <div style="flex: 1;">
+
+  <FilterBar {calendarTree} bind:selected={selectedCalendars} />
+
+  <div class="h-100 d-flex">
+    <div class="flex-grow-1">
       <FullCalendar bind:this={calendar} options={$options} />
     </div>
-    <EventModal event={$event} open={openModal} {toggle} />
   </div>
+
+  <EventModal event={$event} open={openModal} {toggle} />
 </div>
 
 <style>
diff --git a/src/FilterBar.svelte b/src/FilterBar.svelte
index 65e7265..aaa014a 100644
--- a/src/FilterBar.svelte
+++ b/src/FilterBar.svelte
@@ -1,14 +1,29 @@
 <script>
+  import { Button, Offcanvas, Icon } from 'sveltestrap';
   import FilterItem from './FilterItem.svelte';
   export let calendarTree = [];
   export let selected = null;
 
-  let subSelections = Array.from({length: Object.keys(calendarTree).length}, e => []);
+  let subSelections = Array.from({ length: Object.keys(calendarTree).length }, _ => []);
   $: selected = subSelections.flat();
+
+  let open = true;
+  const toggle = () => (open = !open);
 </script>
 
-<ul>
-{#each Object.entries(calendarTree) as [toplevel, subtrees], i}
-  <FilterItem item={toplevel} children={subtrees} bind:selected={subSelections[i]} />
-{/each}
-</ul>
+<Button on:click={toggle} class="my-2">
+  <span class="me-2">Sélection des calendriers</span>
+  <Icon name="chevron-double-right" />
+</Button>
+
+<Offcanvas
+  isOpen={open}
+  {toggle}
+  scroll
+  placement="start"
+  header="Sélection des calendriers"
+>
+  {#each Object.entries(calendarTree) as [toplevel, subtrees], i}
+    <FilterItem item={toplevel} children={subtrees} bind:selected={subSelections[i]} />
+  {/each}
+</Offcanvas>
diff --git a/src/FilterItem.svelte b/src/FilterItem.svelte
index 0e6e60a..59cd21a 100644
--- a/src/FilterItem.svelte
+++ b/src/FilterItem.svelte
@@ -4,6 +4,7 @@
 
   import TriStateCheckbox from './TriStateCheckbox.svelte';
   import { createTriState, createTriStates, UNCHECKED, CHECKED, WEIRD } from './stores';
+  import { Icon } from 'sveltestrap';
 
   export let item = null;
 
@@ -11,12 +12,12 @@
   export let selected = [];
   export let filtering = createTriState(CHECKED);
   let subfiltering = createTriStates(CHECKED, Object.entries(children).length);
-  let subselected = Array.from({length: Object.entries(children).length}, e => []);
+  let subselected = Array.from({ length: Object.entries(children).length }, e => []);
 
   function isVal(val) {
     return function (other) {
       return other === val;
-    }
+    };
   }
 
   function areAllChecked(values) {
@@ -30,7 +31,7 @@
   function handleChildChange(i) {
     return function handler(evt) {
       subfiltering.setAt(i, evt.detail.value);
-    }
+    };
   }
 
   subfiltering.subscribe(subvalues => {
@@ -38,7 +39,11 @@
       filtering.setChecked();
     } else if (areAllUnchecked(subvalues) && $filtering !== UNCHECKED) {
       filtering.setUnchecked();
-    } else if (!areAllChecked(subvalues) && !areAllUnchecked(subvalues) && $filtering !== WEIRD) {
+    } else if (
+      !areAllChecked(subvalues) &&
+      !areAllUnchecked(subvalues) &&
+      $filtering !== WEIRD
+    ) {
       filtering.setWeird();
     }
   });
@@ -62,21 +67,49 @@
     dispatch('change', { value: evt.detail.value });
   }
 
-  $: selected = $filtering === CHECKED ? [item, ...subselected.flat()] : subselected.flat();
+  $: icon = () => {
+    switch ($filtering) {
+      case UNCHECKED:
+        return 'circle';
+      case WEIRD:
+        return 'circle-half';
+      case CHECKED:
+        return 'check-circle-fill';
+    }
+  };
+
+  $: selected =
+    $filtering === CHECKED ? [item, ...subselected.flat()] : subselected.flat();
 </script>
 
 {#if item != null}
-<li>
-<TriStateCheckbox state={$filtering} on:change={handleChange} value={item} initialValue={true} />
-<span>{item}</span>
-  <ul>
-  {#each Object.entries(children) as [toplevel, subchildren], i}
-    {#if subchildren}
-      <svelte:self item={toplevel} children={subchildren} on:change={handleChildChange(i)} filtering={subfiltering.storeAt(i)} bind:selected={subselected[i]} />
-    {:else}
-      <svelte:self item={toplevel} on:change={handleChildChange(i)} filtering={subfiltering.storeAt(i)} bind:selected={subselected[i]} />
-    {/if}
-  {/each}
-  </ul>
-</li>
+  <li>
+    <TriStateCheckbox
+      state={$filtering}
+      on:change={handleChange}
+      value={item}
+      initialValue={true}
+    />
+    <span><Icon name={icon()} />{item}</span>
+    <ul>
+      {#each Object.entries(children) as [toplevel, subchildren], i}
+        {#if subchildren}
+          <svelte:self
+            item={toplevel}
+            children={subchildren}
+            on:change={handleChildChange(i)}
+            filtering={subfiltering.storeAt(i)}
+            bind:selected={subselected[i]}
+          />
+        {:else}
+          <svelte:self
+            item={toplevel}
+            on:change={handleChildChange(i)}
+            filtering={subfiltering.storeAt(i)}
+            bind:selected={subselected[i]}
+          />
+        {/if}
+      {/each}
+    </ul>
+  </li>
 {/if}