android + ios base

web/src/components/Counter.css

@@ -0,0 +1,21 @@
+.increment {
+  font-family: inherit;
+  font-size: inherit;
+  padding: 1em 2em;
+  color: #335d92;
+  background-color: rgba(68, 107, 158, 0.1);
+  border-radius: 2em;
+  border: 2px solid rgba(68, 107, 158, 0);
+  outline: none;
+  width: 200px;
+  font-variant-numeric: tabular-nums;
+  cursor: pointer;
+}
+
+.increment:focus {
+  border: 2px solid #335d92;
+}
+
+.increment:active {
+  background-color: rgba(68, 107, 158, 0.2);
+}

web/src/components/Counter.tsx

@@ -0,0 +1,11 @@
+import { createSignal } from "solid-js";
+import "./Counter.css";
+
+export default function Counter() {
+  const [count, setCount] = createSignal(0);
+  return (
+    <button class="increment" onClick={() => setCount(count() + 1)} type="button">
+      Clicks: {count()}
+    </button>
+  );
+}