1.App {
 2  text-align: center;
 3}
 4
 5.App-logo {
 6  animation: App-logo-spin infinite 20s linear;
 7  height: 80px;
 8}
 9
10.App-header {
11  background-color: #222;
12  height: 150px;
13  padding: 20px;
14  color: white;
15}
16
17.App-title {
18  font-size: 1.5em;
19}
20
21.App-intro {
22  font-size: large;
23}
24
25@keyframes App-logo-spin {
26  from { transform: rotate(0deg); }
27  to { transform: rotate(360deg); }
28}