.animate_class_1{
    animation-name: animate_1;
    animation-duration: 10s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}
@keyframes animate_1 {
    100% {transform: rotate(360deg);}
    0%   {opacity: 0;}
    40%  {opacity: 1;}
    90%  {opacity: 1;}
    100% {opacity: 0;}
}

/*.animate_class_2{*/
/*    animation-name: animate_2;*/
/*    animation-duration: 4s;*/
/*    animation-delay: 2s;*/
/*    opacity: 0;*/
/*}*/
/*@keyframes animate_2 {*/
/*    0%   {opacity: 0;}*/
/*    100% {opacity: 1;}*/
/*}*/