diff --git a/src/_h5ai/public/css/lib/responsive.less b/src/_h5ai/public/css/lib/responsive.less
index 7e601c7d..3b598a6a 100644
--- a/src/_h5ai/public/css/lib/responsive.less
+++ b/src/_h5ai/public/css/lib/responsive.less
@@ -7,6 +7,11 @@
             width: 0;
         }
     }
+    #sidebar {
+        position: absolute;
+        min-height: 100%;
+        z-index: 1;
+    }
     #view.view-details {
         .header .label, .item .label {
             margin-right: 80px !important;