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-intro {

    18   font-size: large;

    19 }

    20 

    21 @keyframes App-logo-spin {

    22   from { transform: rotate(0deg); }

    23   to { transform: rotate(360deg); }

    24 }