Three.js Loader

1body{
2  margin: 0;
3  padding: 0;
4  background: #222;
5  overflow: hidden;
6}
7
8canvas{
9  position: absolute;
10  top: calc(50% - 250px);
11  left: calc(50% - 250px);
12  top: -webkit-calc(50% - 250px);
13  left: -webkit-calc(50% - 250px);
14}