feat: Add richer card theme support (#1809)

docs/index.html

@@ -31,7 +31,7 @@
       .svg-icon {
         background-color: rgb(255, 255, 255);
         vertical-align: middle;
-        background: repeating-conic-gradient(#8080804f 0% 25%, transparent 0% 50%) 50% /
+        background: repeating-conic-gradient(#80808091 0% 25%, transparent 0% 50%) 50% /
           4px 4px;
       }
     </style>