<h3>But... Which is the animation?</h3>
<div class='rotator animation'></div>

<h3>Is it this one?</h3>
<div class='rotator transition'></div>

.rotator {
  width: 100px;
  height: 100px;
  margin: 20px;
  background-color:teal;
}
.transition {
  -webkit-transition: all 1000s linear;
  -moz-transition: all 1000s linear;
  -ms-transition: all 1000s linear;
  -o-transition: all 1000s linear;
  transition: all 1000s linear;
}
.translateAnimationClass { 
  -webkit-transform: rotateX(43200deg) rotateY(14400deg);
  -moz-transform: rotateX(43200deg) rotateY(14400deg);
  -ms-transform: rotateX(43200deg) rotateY(14400deg);
  -o-transform: rotateX(43200deg) rotateY(14400deg);
  transform: rotateX(43200deg) rotateY(14400deg); 
}
.animation {
  -webkit-animation: rotator 25s linear infinite;
  -moz-animation: rotator 25s linear infinite;
  -ms-animation: rotator 25s linear infinite;
  -o-animation: rotator 25s linear infinite;
  animation: rotator 25s linear infinite;
}

@-webkit-keyframes rotator {
  0%   { -webkit-transform: rotateX(0deg)    rotateY(0deg);    }
  100% { -webkit-transform: rotateX(1080deg) rotateY(360deg);  }
}
@-moz-keyframes rotator {
  0%   { -moz-transform: rotateX(0deg)    rotateY(0deg);    }
  100% { -moz-transform: rotateX(1080deg) rotateY(360deg);  }
}
@-ms-keyframes rotator {
  0%   { -ms-transform: rotateX(0deg)    rotateY(0deg);    }
  100% { -ms-transform: rotateX(1080deg) rotateY(360deg);  }
}
@-o-keyframes rotator {
  0%   { -o-transform: rotateX(0deg)    rotateY(0deg);    }
  100% { -o-transform: rotateX(1080deg) rotateY(360deg);  }
}
@keyframes rotator {
  0%   { transform: rotateX(0deg)    rotateY(0deg);    }
  100% { transform: rotateX(1080deg) rotateY(360deg);  }
}

window.onload = function() { document.getElementsByClassName('transition')[0].classList.add('translateAnimationClass'); }