fix: fix and refactor AoT css

css/_always_on_top.scss

@@ -0,0 +1,48 @@
+
+.always-on-top-toolbox {
+    background-color: $newToolbarBackgroundColor;
+    border-radius: 3px;
+    display: flex;
+    flex-direction: row;
+    left: 50%;
+    position: absolute;
+    top: 10px;
+    transform: translateX(-50%);
+    z-index: $toolbarZ;
+
+    .toolbox-icon {
+        cursor: pointer;
+        padding: 7px;
+
+        &.toggled {
+            background: $AOTToolbarButtonToggleColor;
+        }
+
+        &.disabled {
+            cursor: initial;
+        }
+    }
+
+    .toolbox-button {
+        &:first-child {
+            .toolbox-icon {
+                border-top-left-radius: 3px;
+                border-bottom-left-radius: 3px;
+            }
+        }
+
+        &:nth-child(2) {
+            svg {
+                fill: $hangupColor;
+            }
+        }
+
+        &:last-child {
+            .toolbox-icon {
+                border-top-right-radius: 3px;
+                border-bottom-right-radius: 3px;
+            }
+        }
+    }
+    
+}

css/_toolbars.scss

@@ -270,7 +270,6 @@
     }
 }
 
-.always-on-top-toolbox,
 .filmstrip-toolbox {
     background-color: $newToolbarBackgroundColor;
     box-sizing: border-box;
@@ -304,36 +303,6 @@
     border-radius: 3px;
 }
 
-.always-on-top-toolbox {
-    flex-direction: row;
-    left: 50%;
-    position: absolute;
-    top: 10px;
-    transform: translateX(-50%);
-    z-index: $toolbarZ;
-
-    i {
-        font-size: $newToolbarFontSize;
-        height: $newToolbarSize;
-        line-height: $newToolbarSize;
-        width: $newToolbarSize;
-    }
-
-    .disabled {
-        cursor: initial;
-    }
-
-    .toolbox-button:first-child i {
-        border-top-left-radius: 3px;
-        border-bottom-left-radius: 3px;
-    }
-
-    .toolbox-button:last-child i {
-        border-top-right-radius: 3px;
-        border-bottom-right-radius: 3px;
-    }
-}
-
 .filmstrip-toolbox {
     i {
         font-size: 1.9em;

css/main.scss

@@ -26,6 +26,7 @@ $flagsImagePath: "../images/";
 /* Modules BEGIN */
 
 @import 'aui_reset';
+@import 'always_on_top';
 @import 'atlaskit_overrides';
 @import 'base';
 @import 'utils';