Loading Spinner

1* {
2    margin: 0;
3    padding: 0;
4    box-sizing: border-box;
5}
6
7body {
8    font-family: sans-serif;
9    font-size: 14px;
10    color: #fff;
11    overflow: hidden;
12}
13
14canvas {
15    display: block;
16    max-width: 100%;
17    background: grey;
18}