Update style.css

style.css

@@ -52,3 +52,12 @@ h1 {
     white-space: pre-wrap;
     word-break: break-all;
 }
+
+#history_list img {
+    cursor: pointer;
+    transition: transform 0.2s;
+}
+
+#history_list img:hover {
+    transform: scale(1.1);
+}