diff --git a/resources/sass/_layout.scss b/resources/sass/_layout.scss
index ac0e96a90..d157ffdc3 100644
--- a/resources/sass/_layout.scss
+++ b/resources/sass/_layout.scss
@@ -354,56 +354,36 @@ body.flexbox {
   grid-template-columns: 1fr 4fr 1fr;
   grid-template-areas: "a b c";
   grid-column-gap: $-xl;
-  .tri-layout-right {
-    grid-area: c;
-    min-width: 0;
-  }
-  .tri-layout-left {
-    grid-area: a;
-    min-width: 0;
-  }
-  .tri-layout-middle {
-    grid-area: b;
-    padding-top: $-m;
-    min-width: 0;
-  }
+  position: relative;
 }
-@include smaller-than($xxl) {
-  .tri-layout-container {
-    grid-template-areas:  "c b b"
-    "a b b"
-    ". b b";
-    grid-template-columns: 1fr 3fr;
-    grid-template-rows: min-content min-content 1fr;
-    padding-inline-end: $-l;
-  }
+.tri-layout-sides {
+  grid-column-start: a;
+  grid-column-end: c;
+  grid-row: 1;
+  min-width: 0;
+  z-index: 4;
 }
-@include between($xxl, $xxxl) {
-  .tri-layout-container {
-    grid-template-columns: 1fr calc(940px + (2 * $-m)) 1fr;
-    grid-column-gap: $-s;
-    margin-inline-start: $-m;
-    margin-inline-end: $-m;
-  }
+.tri-layout-sides-content {
+  display: grid;
+  grid-template-areas: "a b c";
+  grid-template-columns: 1fr 4fr 1fr;
+  height: 100%;
 }
-@include between($l, $xxl) {
-  .tri-layout-left {
-    position: sticky;
-    top: $-m;
-  }
-  .tri-layout-left-contents {
-    position: sticky;
-    top: 0;
-    max-height: 100vh;
-    overflow-y: scroll;
-    height: 100%;
-    scrollbar-width: none;
-    -ms-overflow-style: none;
-    &::-webkit-scrollbar {
-      display: none;
-    }
-  }
+.tri-layout-middle {
+  grid-area: b;
+  padding-top: $-m;
+  min-width: 0;
+  z-index: 5;
 }
+.tri-layout-right {
+  grid-area: c;
+  min-width: 0;
+}
+.tri-layout-left {
+  grid-area: a;
+  min-width: 0;
+}
+
 @include larger-than($xxl) {
   .tri-layout-left-contents, .tri-layout-right-contents {
     padding: $-xl $-m;
@@ -425,7 +405,62 @@ body.flexbox {
     margin: 0 auto;
   }
 }
-
+@include between($xxl, $xxxl) {
+  .tri-layout-sides-content, .tri-layout-container {
+    grid-template-columns: 1fr calc(940px + (2 * $-m)) 1fr;
+  }
+  .tri-layout-container {
+    grid-column-gap: $-s;
+    margin-inline-start: $-m;
+    margin-inline-end: $-m;
+  }
+}
+@include smaller-than($xxl) {
+  .tri-layout-container {
+    grid-template-areas:  "a b b";
+    grid-template-columns: 1fr 3fr;
+    grid-template-rows: min-content min-content 1fr;
+    padding-inline-end: $-l;
+  }
+  .tri-layout-sides {
+    grid-column-start: a;
+    grid-column-end: a;
+  }
+  .tri-layout-sides-content {
+    display: block;
+  }
+}
+@include between($l, $xxl) {
+  .tri-layout-sides-content {
+    position: sticky;
+    top: 0;
+    max-height: 100vh;
+    min-height: 50vh;
+    overflow-y: scroll;
+    overflow-x: hidden;
+    height: 100%;
+    scrollbar-width: none;
+    -ms-overflow-style: none;
+    &::-webkit-scrollbar {
+      display: none;
+    }
+  }
+}
+@include larger-than($l) {
+  .tri-layout-mobile-tabs {
+    display: none;
+  }
+  .tri-layout-left-contents > *, .tri-layout-right-contents > * {
+    @include lightDark(opacity, 0.6, 0.75);
+    transition: opacity ease-in-out 120ms;
+    &:hover, &:focus-within {
+      opacity: 1 !important;
+    }
+    @media (prefers-contrast: more) {
+      opacity: 1 !important;
+    }
+  }
+}
 @include smaller-than($l) {
   .tri-layout-container {
     grid-template-areas:  none;
@@ -433,18 +468,16 @@ body.flexbox {
     grid-column-gap: 0;
     padding-inline-end: $-xs;
     padding-inline-start: $-xs;
-    .tri-layout-left-contents, .tri-layout-right-contents {
+    .tri-layout-sides {
       padding-inline-start: $-m;
       padding-inline-end: $-m;
+      grid-column: 1/1;
     }
     .tri-layout-left > *, .tri-layout-right > * {
       display: none;
       pointer-events: none;
     }
     .tri-layout-left, .tri-layout-right {
-      grid-area: none;
-      grid-column: 1/1;
-      grid-row: 1;
       padding-top: 0 !important;
     }
     .tri-layout-middle {
@@ -470,21 +503,6 @@ body.flexbox {
     }
   }
 }
-@include larger-than($l) {
-  .tri-layout-mobile-tabs {
-    display: none;
-  }
-  .tri-layout-left-contents > *, .tri-layout-right-contents > * {
-    @include lightDark(opacity, 0.6, 0.75);
-    transition: opacity ease-in-out 120ms;
-    &:hover, &:focus-within {
-      opacity: 1 !important;
-    }
-    @media (prefers-contrast: more) {
-      opacity: 1 !important;
-    }
-  }
-}
 
 @include smaller-than($m) {
   .tri-layout-container {
diff --git a/resources/views/layouts/tri.blade.php b/resources/views/layouts/tri.blade.php
index 14016830d..c3cedf0fb 100644
--- a/resources/views/layouts/tri.blade.php
+++ b/resources/views/layouts/tri.blade.php
@@ -27,10 +27,20 @@
 
     <div refs="tri-layout@container" class="tri-layout-container" @yield('container-attrs') >
 
-        <div class="tri-layout-left print-hidden" id="sidebar">
-            <aside class="tri-layout-left-contents">
-                @yield('left')
-            </aside>
+        <div class="tri-layout-sides print-hidden">
+            <div class="tri-layout-sides-content">
+                <div class="tri-layout-right print-hidden">
+                    <aside class="tri-layout-right-contents">
+                        @yield('right')
+                    </aside>
+                </div>
+
+                <div class="tri-layout-left print-hidden" id="sidebar">
+                    <aside class="tri-layout-left-contents">
+                        @yield('left')
+                    </aside>
+                </div>
+            </div>
         </div>
 
         <div class="@yield('body-wrap-classes') tri-layout-middle">
@@ -38,12 +48,6 @@
                 @yield('body')
             </div>
         </div>
-
-        <div class="tri-layout-right print-hidden">
-            <aside class="tri-layout-right-contents">
-                @yield('right')
-            </aside>
-        </div>
     </div>
 
 @stop