Update app.css

app.css

@@ -67,18 +67,8 @@ h1 {
 
 /* Highlight dead links */
 .dead-link {
-    background-color: #FFF59D; /* Yellow background */
-}
-
-.dead-link .card-content h3,
-.dead-link .card-content p,
-.dead-link .card-content a {
-    color: #D32F2F !important; /* Red text */
-}
-
-.dead-link .card-content a:hover {
-    text-decoration: underline;
-    color: #B71C1C !important; /* Darker red on hover */
+    border: 2px solid #D32F2F; /* Red border */
+    background-color: #FFF9C4; /* Light yellow background */
 }
 
 @media screen and (max-width: 600px) {