Add disabled button styles

Author: LanesGood

packages/web/src/index.css

@@ -64,6 +64,12 @@ button {
   -webkit-appearance: none;
   -moz-appearance: none;
 }
+button:disabled {
+  background: var(--bg-dark);
+  border: none;
+  box-shadow: none;
+  opacity: 0.6;
+}
 .layout {
   display: grid;
   grid-template-columns: 1fr;