diff --git a/tensorboard/webapp/core/views/layout_container.scss b/tensorboard/webapp/core/views/layout_container.scss
index e0d724116c7..57a197257e8 100644
--- a/tensorboard/webapp/core/views/layout_container.scss
+++ b/tensorboard/webapp/core/views/layout_container.scss
@@ -30,7 +30,6 @@ limitations under the License.
 .expand {
   @include tb-theme-foreground-prop(border-color, border);
   box-sizing: border-box;
-  contain: strict;
   flex: 0 0;
   justify-self: stretch;
 }
@@ -44,6 +43,7 @@ limitations under the License.
   border-style: solid;
   border-width: 0 2px;
   cursor: ew-resize;
+  contain: strict;
   display: flex;
   justify-self: stretch;
 
@@ -69,6 +69,7 @@ limitations under the License.
   border-style: solid;
   border-width: 0 1px 0 0;
   color: inherit;
+  contain: content;
   cursor: pointer;
   display: flex;
   justify-self: stretch;