diff --git a/src/components/SampleLayout.module.css b/src/components/SampleLayout.module.css
index d7d530fc..fac4d2b0 100644
--- a/src/components/SampleLayout.module.css
+++ b/src/components/SampleLayout.module.css
@@ -32,10 +32,21 @@ nav.sourceFileNav li a {
   background-color: #403e3e;
 }
 
+nav.sourceFileNav li:hover {
+  height: 100%;
+  box-shadow: 0 -10px 0 0 rgb(167, 167, 167);
+  border-radius: 10px
+}
+
 nav.sourceFileNav li a[data-active=true] {
   background-color: #282823;
 }
 
+nav.sourceFileNav li:has(a[data-active=true]) {
+  box-shadow: 0 -10px 0 0 rgb(167, 167, 167);
+  border-radius: 10px;
+}
+
 .sourceFileContainer {
   overflow: hidden;
   height: 0;
@@ -47,4 +58,4 @@ nav.sourceFileNav li a[data-active=true] {
 
 .sourceFileContainer :global(.CodeMirror) {
   margin-top: 0;
-}
+}
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