feat: built header

Author: Vaishali785

src/App.css

@@ -3,3 +3,17 @@
 	margin: 0;
 	box-sizing: border-box;
 }
+
+@media (prefers-reduced-motion: no-preference) {
+	a:nth-of-type(2) .logo {
+		animation: logo-spin infinite 20s linear;
+	}
+}
+
+.card {
+	padding: 2em;
+}
+
+.read-the-docs {
+	color: #888;
+}