Make a layer spin - e.g. a watch second hand

spinning-layer.css

@keyframes rotate360 {
  from {transform: translate(-50%, -50%) rotate(0deg);}
  to {transform: translate(-50%, -50%) rotate(360deg);}
}

/* 
  "Evolvens_mp_mutato_" is the prefix of the file for the second hand
  it is expected that all the choices requiring the animation have the same prefix.
*/
.mkl_pc .mkl_pc_container .mkl_pc_viewer .mkl_pc_layers img[src*="Evolvens_mp_mutato_"] {
    transform-origin: 50% 50%;
    animation-name: rotate360;
    animation-duration: 60s;
    animation-timing-function: linear; 
    animation-iteration-count: infinite;
}