diff --git a/src/components/settings_modal/settings_modal.scss b/src/components/settings_modal/settings_modal.scss
index 9c78cd901..a1e3ec412 100644
--- a/src/components/settings_modal/settings_modal.scss
+++ b/src/components/settings_modal/settings_modal.scss
@@ -1,14 +1,26 @@
 .settings-modal {
   overflow: hidden;
 
-  h3 {
-    font-size: 1.4rem;
+  h2 {
+    font-size: 1.3rem;
+    font-weight: 500;
     margin-top: 1em;
     margin-bottom: 1em;
   }
 
-  h4 {
+  h3 {
     font-size: 1.2rem;
+    font-weight: 500;
+    margin-top: 1em;
+    margin-bottom: 0.5em;
+    border-bottom: 1px solid var(--border);
+    padding-bottom: 0.25em;
+    box-sizing: border-box;
+    padding-left: 0.5em;
+  }
+
+  h4 {
+    font-size: 1.1rem;
     margin-top: 1em;
     margin-bottom: 0.5em;
   }
@@ -16,19 +28,21 @@
   h5 {
     font-size: 1rem;
     margin-bottom: 0.5em;
+    margin-top: 0;
   }
 
   .setting-list,
   .option-list {
     list-style-type: none;
     padding-left: 2em;
+    margin: 0;
 
     .btn:not(.dropdown-button) {
       padding: 0 2em;
     }
 
     li {
-      margin-bottom: 0.5em;
+      margin: 1em 0;
     }
 
     .suboptions {
@@ -55,7 +69,7 @@
     transition: transform;
     transition-timing-function: ease-in-out;
     transition-duration: 300ms;
-    width: 1000px;
+    width: 70em;
     max-width: 90vw;
     height: 90vh;
 
@@ -90,6 +104,12 @@
   }
 
   &.-mobile {
+    .tabs {
+      .menu-item {
+        font-size: 1.2em
+      }
+    }
+
     .setting-list,
     .option-list {
       padding-left: 0.25em;
diff --git a/src/components/settings_modal/settings_modal_user_content.js b/src/components/settings_modal/settings_modal_user_content.js
index 9c6e3bba6..18e1148dc 100644
--- a/src/components/settings_modal/settings_modal_user_content.js
+++ b/src/components/settings_modal/settings_modal_user_content.js
@@ -82,9 +82,6 @@ const SettingsModalContent = {
     },
     expertLevel () {
       return this.$store.state.config.expertLevel
-    },
-    isMobileLayout () {
-      return useInterfaceStore().layoutType === 'mobile'
     }
   },
   data () {
@@ -108,21 +105,6 @@ const SettingsModalContent = {
       // Clear the state of target tab, so that next time settings is opened
       // it doesn't force it.
       useInterfaceStore().clearSettingsModalTargetTab()
-    },
-    nestedTooBig () {
-      if (this.navCollapsed) {
-        this.navCollapsed = false
-        this.$refs.tabSwitcher.showNav()
-      }
-    },
-    nestedTooSmall () {
-      if (!this.navCollapsed) {
-        this.navCollapsed = true
-        this.$refs.tabSwitcher.hideNav()
-      }
-    },
-    nestedNavSide (side) {
-      this.navHideHeader = side === 'content'
     }
   },
   mounted () {
diff --git a/src/components/settings_modal/settings_modal_user_content.scss b/src/components/settings_modal/settings_modal_user_content.scss
index 2884938b4..5deca7868 100644
--- a/src/components/settings_modal/settings_modal_user_content.scss
+++ b/src/components/settings_modal/settings_modal_user_content.scss
@@ -1,20 +1,6 @@
 .settings_tab-switcher {
   height: 100%;
 
-  h1 {
-    margin-bottom: 0.5em;
-    margin-top: 0.5em;
-  }
-
-  h4 {
-    margin-bottom: 0;
-    margin-top: 0.25em;
-  }
-
-  h5 {
-    margin-top: 0.25em;
-  }
-
   .setting-item {
     border-bottom: 2px solid var(--border);
     margin: 1em 1em 1.4em;
diff --git a/src/components/settings_modal/settings_modal_user_content.vue b/src/components/settings_modal/settings_modal_user_content.vue
index 58a0adbd9..4b3308869 100644
--- a/src/components/settings_modal/settings_modal_user_content.vue
+++ b/src/components/settings_modal/settings_modal_user_content.vue
@@ -8,7 +8,6 @@
     :hide-header="navHideHeader"
   >
     <div
-      :full-width="true"
       :label="$t('settings.general')"
       icon="wrench"
       data-tab-name="general"
@@ -16,16 +15,15 @@
       <GeneralTab />
     </div>
     <div
+      v-if="isLoggedIn"
+      :label="$t('settings.profile_tab')"
+      icon="user"
+      data-tab-name="profile"
       :full-width="true"
-      :label="$t('settings.posts')"
-      icon="message"
-      data-tab-name="posts"
-      :delay-render="true"
     >
-      <PostsTab />
+      <ProfileTab />
     </div>
     <div
-      :full-width="true"
       :label="$t('settings.composing')"
       icon="pen-alt"
       data-tab-name="composing"
@@ -34,13 +32,12 @@
       <ComposingTab />
     </div>
     <div
-      :full-width="true"
-      :label="$t('settings.layout')"
-      icon="table-columns"
-      data-tab-name="layout"
+      :label="$t('settings.posts')"
+      icon="message"
+      data-tab-name="posts"
       :delay-render="true"
     >
-      <LayoutTab />
+      <PostsTab />
     </div>
     <div
       :full-width="true"
@@ -52,39 +49,26 @@
       <AppearanceTab />
     </div>
     <div
-      v-if="isLoggedIn"
-      :label="$t('settings.profile_tab')"
-      icon="user"
-      data-tab-name="profile"
+      :full-width="true"
+      :label="$t('settings.layout')"
+      icon="table-columns"
+      data-tab-name="layout"
+      :delay-render="true"
     >
-      <ProfileTab />
+      <LayoutTab />
     </div>
     <div
       v-if="isLoggedIn"
+      :full-width="true"
       :label="$t('settings.notifications')"
       icon="bell"
       data-tab-name="notifications"
     >
       <NotificationsTab />
     </div>
-    <div
-      v-if="isLoggedIn"
-      :label="$t('settings.security_tab')"
-      icon="lock"
-      data-tab-name="security"
-    >
-      <SecurityTab />
-    </div>
-    <div
-      :label="$t('settings.clutter')"
-      :fullHeight="true"
-      icon="broom"
-      data-tab-name="mutesAndBlocks"
-    >
-      <ClutterTab />
-    </div>
     <div
       :label="$t('settings.filtering')"
+      :full-width="true"
       icon="filter"
       data-tab-name="filtering"
     >
@@ -99,6 +83,22 @@
     >
       <MutesAndBlocksTab />
     </div>
+    <div
+      :label="$t('settings.clutter')"
+      :fullHeight="true"
+      icon="broom"
+      data-tab-name="clutter"
+    >
+      <ClutterTab />
+    </div>
+    <div
+      v-if="isLoggedIn"
+      :label="$t('settings.security_tab')"
+      icon="lock"
+      data-tab-name="security"
+    >
+      <SecurityTab />
+    </div>
     <div
       v-if="isLoggedIn"
       :label="$t('settings.data_import_export_tab')"
@@ -123,7 +123,7 @@
       data-tab-name="theme"
       :delay-render="true"
     >
-      <ThemeTab />
+      <OldThemeTab />
     </div>
     <div
       v-if="expertLevel > 0"
diff --git a/src/components/settings_modal/tabs/appearance_tab.scss b/src/components/settings_modal/tabs/appearance_tab.scss
index ccc494d32..58ec1e8aa 100644
--- a/src/components/settings_modal/tabs/appearance_tab.scss
+++ b/src/components/settings_modal/tabs/appearance_tab.scss
@@ -1,4 +1,8 @@
 .appearance-tab {
+  h3 {
+    border: none
+  }
+
   .palette,
   .theme-notice {
     padding: 0.5em;
@@ -10,14 +14,6 @@
     padding-bottom: 0.5em;
   }
 
-  h4 {
-    margin: 2em 0;
-    line-height: 1.5;
-  }
-
-  h5 {
-    display: block;
-  }
 
   input[type="file"] {
     padding: 0.25em;
diff --git a/src/components/settings_modal/tabs/data_import_export_tab.scss b/src/components/settings_modal/tabs/data_import_export_tab.scss
new file mode 100644
index 000000000..034d03489
--- /dev/null
+++ b/src/components/settings_modal/tabs/data_import_export_tab.scss
@@ -0,0 +1,5 @@
+.data-import-export-tab {
+  h3 {
+    margin-right: -2em;
+  }
+}
diff --git a/src/components/settings_modal/tabs/data_import_export_tab.vue b/src/components/settings_modal/tabs/data_import_export_tab.vue
index eb3c86425..e63385e30 100644
--- a/src/components/settings_modal/tabs/data_import_export_tab.vue
+++ b/src/components/settings_modal/tabs/data_import_export_tab.vue
@@ -1,9 +1,10 @@
 <template>
   <div
+    class="data-import-export-tab"
     :label="$t('settings.data_import_export_tab')"
   >
     <div class="setting-item">
-      <h2>{{ $t('settings.follow_import') }}</h2>
+      <h3>{{ $t('settings.follow_import') }}</h3>
       <p>{{ $t('settings.import_followers_from_a_csv_file') }}</p>
       <Importer
         :submit-handler="importFollows"
@@ -12,7 +13,7 @@
       />
     </div>
     <div class="setting-item">
-      <h2>{{ $t('settings.follow_export') }}</h2>
+      <h3>{{ $t('settings.follow_export') }}</h3>
       <Exporter
         :get-content="getFollowsContent"
         filename="friends.csv"
@@ -20,7 +21,7 @@
       />
     </div>
     <div class="setting-item">
-      <h2>{{ $t('settings.block_import') }}</h2>
+      <h3>{{ $t('settings.block_import') }}</h3>
       <p>{{ $t('settings.import_blocks_from_a_csv_file') }}</p>
       <Importer
         :submit-handler="importBlocks"
@@ -29,7 +30,7 @@
       />
     </div>
     <div class="setting-item">
-      <h2>{{ $t('settings.block_export') }}</h2>
+      <h3>{{ $t('settings.block_export') }}</h3>
       <Exporter
         :get-content="getBlocksContent"
         filename="blocks.csv"
@@ -37,7 +38,7 @@
       />
     </div>
     <div class="setting-item">
-      <h2>{{ $t('settings.mute_import') }}</h2>
+      <h3>{{ $t('settings.mute_import') }}</h3>
       <p>{{ $t('settings.import_mutes_from_a_csv_file') }}</p>
       <Importer
         :submit-handler="importMutes"
@@ -46,7 +47,7 @@
       />
     </div>
     <div class="setting-item">
-      <h2>{{ $t('settings.mute_export') }}</h2>
+      <h3>{{ $t('settings.mute_export') }}</h3>
       <Exporter
         :get-content="getMutesContent"
         filename="mutes.csv"
@@ -54,7 +55,7 @@
       />
     </div>
     <div class="setting-item">
-      <h2>{{ $t('settings.account_backup') }}</h2>
+      <h3>{{ $t('settings.account_backup') }}</h3>
       <p>{{ $t('settings.account_backup_description') }}</p>
       <table>
         <thead>
@@ -128,4 +129,4 @@
 </template>
 
 <script src="./data_import_export_tab.js"></script>
-<!-- <style lang="scss" src="./profile.scss"></style> -->
+<style lang="scss" src="./data_import_export_tab.scss"></style>
diff --git a/src/components/settings_modal/tabs/developer_tab.js b/src/components/settings_modal/tabs/developer_tab.js
index 20a671735..e9978884e 100644
--- a/src/components/settings_modal/tabs/developer_tab.js
+++ b/src/components/settings_modal/tabs/developer_tab.js
@@ -1,3 +1,9 @@
+import BooleanSetting from '../helpers/boolean_setting.vue'
+
+import SharedComputedObject from '../helpers/shared_computed_object.js'
+
+import { clearCache, cacheKey, emojiCacheKey } from 'src/services/sw/sw.js'
+
 const pleromaFeCommitUrl = 'https://git.pleroma.social/pleroma/pleroma-fe/commit/'
 
 const VersionTab = {
@@ -9,10 +15,14 @@ const VersionTab = {
       frontendVersion: instance.frontendVersion
     }
   },
+  components: {
+    BooleanSetting
+  },
   computed: {
     frontendVersionLink () {
       return pleromaFeCommitUrl + this.frontendVersion
-    }
+    },
+    ...SharedComputedObject(),
   }
 }
 
diff --git a/src/components/settings_modal/tabs/developer_tab.scss b/src/components/settings_modal/tabs/developer_tab.scss
new file mode 100644
index 000000000..944cf052f
--- /dev/null
+++ b/src/components/settings_modal/tabs/developer_tab.scss
@@ -0,0 +1,10 @@
+.developer-tab {
+  dt {
+    font-weight: 900;
+  }
+
+  dd {
+    margin-top: 0.5em;
+    margin-bottom: 1em;
+  }
+}
diff --git a/src/components/settings_modal/tabs/developer_tab.vue b/src/components/settings_modal/tabs/developer_tab.vue
index 8c9c9efc1..6b4480db7 100644
--- a/src/components/settings_modal/tabs/developer_tab.vue
+++ b/src/components/settings_modal/tabs/developer_tab.vue
@@ -1,32 +1,31 @@
 <template>
-  <div :label="$t('settings.developer')">
-    <div class="setting-item">
-      <ul class="setting-list">
-        <li>
-          <p>{{ $t('settings.version.backend_version') }}</p>
-          <ul class="option-list">
-            <li>
-              <a
-                :href="backendRepository"
-                target="_blank"
-              >{{ backendVersion }}</a>
-            </li>
-          </ul>
-        </li>
-        <li>
-          <p>{{ $t('settings.version.frontend_version') }}</p>
-          <ul class="option-list">
-            <li>
-              <a
-                :href="frontendVersionLink"
-                target="_blank"
-              >{{ frontendVersion }}</a>
-            </li>
-          </ul>
-        </li>
-      </ul>
-    </div>
+  <div
+    :label="$t('settings.developer')"
+    class="developer-tab"
+  >
     <div class="setting-item">
+      <h3>{{ $t('settings.version.title')}}</h3>
+      <dl class="setting-list">
+        <dt>{{ $t('settings.version.backend_version') }}</dt>
+        <dd>
+          <a
+            :href="backendRepository"
+            target="_blank"
+          >
+            {{ backendVersion }}
+          </a>
+        </dd>
+        <dt>{{ $t('settings.version.frontend_version') }}</dt>
+        <dd>
+          <a
+            :href="frontendVersionLink"
+            target="_blank"
+            >
+            {{ frontendVersion }}
+          </a>
+        </dd>
+      </dl>
+      <h3>{{ $t('settings.debug')}}</h3>
       <ul class="setting-list">
         <li>
           <BooleanSetting path="virtualScrolling">
@@ -70,3 +69,4 @@
   </div>
 </template>
 <script src="./developer_tab.js" />
+<style lang="scss" src="./developer_tab.scss"></style>
diff --git a/src/components/settings_modal/tabs/posts_tab.vue b/src/components/settings_modal/tabs/posts_tab.vue
index 70bc6ea23..ac5c286e1 100644
--- a/src/components/settings_modal/tabs/posts_tab.vue
+++ b/src/components/settings_modal/tabs/posts_tab.vue
@@ -233,9 +233,11 @@
             {{ $t('settings.use_contain_fit') }}
           </BooleanSetting>
         </li>
-        <h3 v-if="expertLevel > 0">
-          {{ $t('settings.fun') }}
-        </h3>
+      </ul>
+      <h3 v-if="expertLevel > 0">
+        {{ $t('settings.fun') }}
+      </h3>
+      <ul class="setting-list">
         <li v-if="user">
           <BooleanSetting
             path="mentionLinkShowYous"
diff --git a/src/components/settings_modal/tabs/profile_tab.vue b/src/components/settings_modal/tabs/profile_tab.vue
index 947be4a18..3ca0a1980 100644
--- a/src/components/settings_modal/tabs/profile_tab.vue
+++ b/src/components/settings_modal/tabs/profile_tab.vue
@@ -1,7 +1,7 @@
 <template>
   <div class="profile-tab">
     <div class="setting-item profile-edit">
-      <h2>{{ $t('settings.account_profile_edit') }}</h2>
+      <h3>{{ $t('settings.account_profile_edit') }}</h3>
       <UserCard
         :user-id="user.id"
         :editable="true"
@@ -9,7 +9,7 @@
       />
     </div>
     <div class="setting-item">
-      <h2>{{ $t('settings.account_privacy') }}</h2>
+      <h3>{{ $t('settings.account_privacy') }}</h3>
       <ul class="setting-list">
         <li>
           <Checkbox v-model="locked">
diff --git a/src/components/tab_switcher/vertical_tab_switcher.jsx b/src/components/tab_switcher/vertical_tab_switcher.jsx
index ee0e995a0..054e199b3 100644
--- a/src/components/tab_switcher/vertical_tab_switcher.jsx
+++ b/src/components/tab_switcher/vertical_tab_switcher.jsx
@@ -37,19 +37,13 @@ export default {
       required: false,
       type: Boolean,
       default: null
-    },
-    hideHeader: {
-      required: false,
-      type: Boolean,
-      default: null
     }
   },
   data () {
     return {
       active: findFirstUsable(this.slots()),
       resizeHandler: null,
-      navMode: false,
-      navSide: 'content'
+      navSide: 'tabs'
     }
   },
   computed: {
@@ -71,16 +65,6 @@ export default {
       mobileLayout: store => store.layoutType === 'mobile'
     }),
   },
-  created () {
-    this.resizeHandler = throttle(this.onResize, 200)
-    window.addEventListener('resize', this.resizeHandler)
-  },
-  mounted () {
-    this.resizeHandler()
-  },
-  unmounted () {
-    window.removeEventListener('resize', this.resizeHandler)
-  },
   beforeUpdate () {
     const currentSlot = this.slots()[this.active]
     if (!currentSlot.props) {
@@ -92,7 +76,6 @@ export default {
       return (e) => {
         e.preventDefault()
         this.setTab(index)
-        this.onResize()
       }
     },
     setTab (index) {
@@ -105,30 +88,6 @@ export default {
     changeNavSide (side) {
       if (this.navSide !== side) {
         this.navSide = side
-        this.onResize()
-      }
-    },
-    getNavMode () {
-      return this.navMode
-    },
-    onResize () {
-      // All other tabs are hidden and their width is most likely 0
-      const activeTab = this.$refs.root.querySelector('.tab-content-wrapper.-active')
-      const tabContent = activeTab.querySelector('.tab-content')
-      const tabContentWidth = tabContent.clientWidth
-
-      const rootWidth = this.$refs.root.clientWidth
-      const navWidth = this.$refs.nav.clientWidth
-      const contentsWidth = rootWidth - navWidth
-
-      // if contents takes more space than its container
-      if (contentsWidth < tabContentWidth) {
-        this.hideNav()
-      // If we (theoretically) have enough space to fit it in
-      } else if (contentsWidth - navWidth >= tabContentWidth){
-        // First expand the inner layer, then outer
-        // if use same logic as above order will be reversed
-        this.showNav()
       }
     },
     // DO NOT put it to computed, it doesn't work (caching?)
@@ -145,7 +104,7 @@ export default {
         const props = slot.props
         if (!props) return
         const classesTab = ['vertical-tab', 'menu-item']
-        if (this.activeIndex === index) {
+        if (this.activeIndex === index && useInterfaceStore().layoutType !== 'mobile') {
           classesTab.push('-active')
         }
         return (
@@ -183,14 +142,21 @@ export default {
         : ''
 
       const headerClasses = ['tab-content-label']
-      if (this.hideHeader === true) {
-        headerClasses.push('-hidden')
-      }
       const header = (
-        <h1 class={headerClasses}>
-          <button type="button" onClick={() => this.changeNavSide('tabs')}>LOL</button>
+        <h2 class={headerClasses}>
+          <button
+            type="button"
+            onClick={() => this.changeNavSide('tabs')}
+            class="button-unstyled"
+          >
+            <FAIcon
+              size="lg"
+              class="back-button-icon"
+              icon="chevron-left"
+            />
+          </button>
           {props.label}
-        </h1>
+        </h2>
       )
 
       return (
@@ -204,13 +170,14 @@ export default {
     })
 
     const rootClasses = ['vertical-tab-switcher']
-    if (this.navMode) {
-      rootClasses.push('-nav-mode')
-      if (this.navSide === 'content') {
-        rootClasses.push('-nav-content')
-      } else {
-        rootClasses.push('-nav-tabs')
-      }
+    if (useInterfaceStore().layoutType === 'mobile') {
+      rootClasses.push('-mobile')
+    }
+
+    if (this.navSide === 'tabs') {
+      rootClasses.push('-nav-tabs')
+    } else {
+      rootClasses.push('-nav-contents')
     }
 
     return (
diff --git a/src/components/tab_switcher/vertical_tab_switcher.scss b/src/components/tab_switcher/vertical_tab_switcher.scss
index 2a6e1cc6a..3652c0228 100644
--- a/src/components/tab_switcher/vertical_tab_switcher.scss
+++ b/src/components/tab_switcher/vertical_tab_switcher.scss
@@ -1,16 +1,19 @@
 .vertical-tab-switcher {
   display: flex;
   flex-direction: row;
+  container-type: inline-size;
 
   > .tabs {
-    flex: 0 0 auto;
+    flex: 0 0 15em;
     flex-direction: column;
     overflow: hidden auto;
     white-space: nowrap;
     text-overflow: ellipsis;
     width: 15em;
+    min-width: 15em;
     border-right: 1px solid;
     border-right-color: var(--border);
+    box-sizing: border-box;
 
     > .menu-item {
       padding: 0.5em 1em;
@@ -23,18 +26,13 @@
   }
 
   > .contents {
-    flex: 1 1 auto;
-    overflow-x: hidden;
-
-    .tab-content-label {
-      display: none
-    }
+    flex: 1 0 35em;
 
     .tab-content {
       align-self: center;
 
       &:not(.-full-width) {
-        width: 30em;
+        max-width: 40em;
       }
 
       &.-full-width {
@@ -42,16 +40,23 @@
       }
     }
 
+    .tab-content-label {
+      box-sizing: border-box;
+      margin: 0;
+      border-bottom: 1px solid var(--border);
+      display: none;
+
+      button {
+        box-sizing: border-box;
+        padding: 0.5em;
+      }
+    }
+
     .tab-content-wrapper {
       display: flex;
       flex-direction: column;
-
-      .tab-content-label {
-        font-size: 1.5em;
-        padding: 0.5em 1em;
-        margin: 0;
-        border-bottom: 1px solid var(--border);
-      }
+      overflow-y: auto;
+      height: 100%;
 
       &.-hidden {
         display: none;
@@ -69,38 +74,104 @@
     }
   }
 
-  &.-nav-mode {
-    &.-nav-tabs {
-      > .tabs {
-        width: 100%;
-      }
-
-      > .nav-content {
-        width: 0%;
+  &.-mobile {
+    > .contents {
+      .tab-content-label {
+        display: block
       }
     }
 
-    &.-nav-content {
+    &.-nav-contents {
       > .contents {
-        > .tab-content-wrapper {
-          > .tab-content-label {
-            display: block;
+        display: block;
+        flex-grow: 1;
+      }
 
-            &.-hidden {
-              display: none;
-            }
+      > .tabs {
+        display: none;
+        flex-grow: 0;
+        flex-shrink: 1;
+      }
+    }
+
+    &.-nav-tabs {
+      > .tabs {
+        display: block;
+        flex-grow: 1;
+      }
+
+      > .contents {
+        display: none;
+        flex-grow: 0;
+        flex-shrink: 1;
+      }
+    }
+  }
+
+  @supports (container-type: inline-size) {
+    &,
+    &.-mobile {
+      &.-nav-contents,
+      &.-nav-tabs {
+        /* I THINK it's a false positive and eslint doesn't understand the @-rule */
+        /* stylelint-disable no-descending-specificity */
+        > .contents {
+          display: block;
+          flex-grow: 1;
+        }
+
+        > .tabs {
+          display: block;
+          flex-grow: 0;
+        }
+        /* stylelint-enable no-descending-specificity */
+      }
+    }
+
+    @container (width < 50em) {
+      > .contents {
+        .tab-content-label {
+          display: block
+        }
+      }
+
+      &.-mobile {
+        > .contents {
+          .tab-content-label {
+            display: block
           }
         }
       }
 
-      > .tabs {
-        position: absolute;
-        pointer-events: none;
-        opacity: 0;
-      }
+      &,
+      &.-mobile {
+        &.-nav-contents {
+          > .contents {
+            display: block;
+            flex-grow: 1;
+          }
 
-      > .nav-content {
-        width: 100%;
+          > .tabs {
+            display: none;
+            flex-grow: 0;
+            flex-shrink: 1;
+          }
+        }
+
+        &.-nav-tabs {
+          /* stylelint-disable no-descending-specificity */
+          > .tabs {
+            display: block;
+            flex-grow: 1;
+          }
+
+          > .contents {
+            display: none;
+            flex-grow: 0;
+            flex-shrink: 1;
+          }
+          /* stylelint-enable no-descending-specificity */
+        }
       }
     }
   }
diff --git a/src/i18n/en.json b/src/i18n/en.json
index fac033c76..e5f37b392 100644
--- a/src/i18n/en.json
+++ b/src/i18n/en.json
@@ -405,6 +405,7 @@
     "post_look_feel": "Posts Look & Feel",
     "posts": "Posts",
     "developer": "Developer",
+    "debug": "Debug",
     "mention_links": "Mention links",
     "appearance": "Appearance",
     "confirm_new_setting": "Confirm new setting?",
@@ -418,7 +419,7 @@
     "navbar_size": "Top bar size",
     "panel_header_size": "Panel header size",
     "visual_tweaks": "Minor visual tweaks",
-    "theme_debug": "Show what background theme engine assumes when dealing with transparancy (DEBUG)",
+    "theme_debug": "Show what background theme engine assumes when dealing with transparancy",
     "scale_and_layout": "Interface scale and layout",
     "timelines": "Timelines",
     "format_and_language": "Format and Language",
@@ -753,7 +754,7 @@
     "subject_line_email": "Like email: \"re: subject\"",
     "subject_line_mastodon": "Like mastodon: copy as is",
     "subject_line_noop": "Do not copy",
-    "force_theme_recompilation_debug": "Disable theme cahe, force recompile on each boot (DEBUG)",
+    "force_theme_recompilation_debug": "Disable theme cahe, force recompile on each boot",
     "conversation_display": "Conversation display style",
     "conversation_display_tree": "Tree-style",
     "conversation_display_tree_quick": "Tree view",