feat(ui): use custom scrollbars

Signed-off-by: SphericalKat <amolele@gmail.com>

assets/css/app.css

@@ -81,6 +81,19 @@ textarea {
   font-weight: bold;
 }
 
+::-webkit-scrollbar {
+  width: 8px;
+  height: 8px;
+}
+::-webkit-scrollbar-corner,
+::-webkit-scrollbar-track {
+  background: transparent;
+}
+::-webkit-scrollbar-thumb {
+  border-radius: 8px;
+  @apply bg-amber;
+}
+
 .alert {
   width: 100%;
   text-align: center;