//- 9. cube grid
.sk-cube-grid
  .sk-cube.sk-cube1
  .sk-cube.sk-cube2
  .sk-cube.sk-cube3
  .sk-cube.sk-cube4
  .sk-cube.sk-cube5
  .sk-cube.sk-cube6
  .sk-cube.sk-cube7
  .sk-cube.sk-cube8
  .sk-cube.sk-cube9