added the temporary webgame collection

secret/asteroidDestroyer/style.css

@@ -0,0 +1,43 @@
+body {
+  margin: 0;
+  overflow: hidden;
+}
+
+canvas {
+  display: block;
+  background: black;
+  width: 100%;
+  height: 100%;
+}
+
+.controls {
+  display: none;
+  position: absolute;
+  bottom: 20px;
+  left: 50%;
+  transform: translateX(-50%);
+  display: flex;
+  justify-content: space-between;
+  width: 80%;
+}
+
+.control-btn {
+  display: none;
+  padding: 10px;
+  font-size: 18px;
+  background-color: rgba(0, 0, 0, 0.6);
+  color: white;
+  border: 1px solid #fff;
+  border-radius: 5px;
+  cursor: pointer;
+  flex-grow: 1;
+  margin: 0 5px;
+}
+
+@media (max-width: 600px) {
+  .control-btn {
+      display: block;
+      font-size: 16px;
+      padding: 12px;
+  }
+}