Update README.md

README.md

@@ -38,6 +38,18 @@ Instructed on a reduced number of samples, it is designed to tackle never-seen-b
             border-top-left-radius: 10px; /* Rounded top-left corner */
             border-top-right-radius: 10px; /* Rounded top-right corner */
         }
+        .header::after {
+            content: ""; /* No text */
+            display: block;
+            height: 5px; /* Height of the bottom border */
+            background-color: black;
+            border-bottom-left-radius: 10px; /* Rounded bottom-left corner */
+            border-bottom-right-radius: 10px; /* Rounded bottom-right corner */
+            position: absolute;
+            left: 0;
+            right: 0;
+            bottom: -5px; /* Position it below the header */
+        }
         .content {
             padding: 5px;
         }