style: add custom bounce animation for sort indicators

- Added animate-bounce-subtle to index.html
- Makes the sorting arrow look more dynamic and premium

index.html

@@ -43,6 +43,22 @@
     ::-webkit-scrollbar-thumb:hover {
       background: #475569;
     }
+
+    @keyframes bounce-subtle {
+
+      0%,
+      100% {
+        transform: translateY(0);
+      }
+
+      50% {
+        transform: translateY(-3px);
+      }
+    }
+
+    .animate-bounce-subtle {
+      animation: bounce-subtle 2s ease-in-out infinite;
+    }
   </style>
 
 </head>