bokuweb/tuna_pasta

.rect-spinner
  width 40px
  height 40px
  background-color #3498DB
  margin 100px auto
  -webkit-animation rect-sk-rotateplane 1.2s infinite ease-in-out
  animation rect-sk-rotateplane 1.2s infinite ease-in-out

@-webkit-keyframes rect-sk-rotateplane
  0%  -webkit-transform perspective(120px)
  50%  -webkit-transform perspective(120px) rotateY(180deg)
  100%  -webkit-transform perspective(120px) rotateY(180deg)  rotateX(180deg)

@keyframes rect-sk-rotateplane
  0%
    transform perspective(120px) rotateX(0deg) rotateY(0deg)
    -webkit-transform perspective(120px) rotateX(0deg) rotateY(0deg)
  50%
    transform perspective(120px) rotateX(-180.1deg) rotateY(0deg)
    -webkit-transform perspective(120px) rotateX(-180.1deg) rotateY(0deg)
  100%
    transform perspective(120px) rotateX(-180deg) rotateY(-179.9deg)
    -webkit-transform perspective(120px) rotateX(-180deg) rotateY(-179.9deg)