一个简单的动画，ios不卡，安卓有明显的卡顿

.cir1{

animation:mymove 2s infinite;

}

.cir2{

animation:mymove2 2s infinite;

animation-delay: 0.5s;

}

.cir3{

animation:mymove3 2s infinite;

animation-delay: 1.1s;

}

@keyframes mymove{

from{

opacity: 1;

transform: scale(1,1)

}

to{

opacity: 0;

transform: scale(2.5,2.5)

}

}

@keyframes mymove2{

from{

opacity: 1;

transform: scale(1,1)

}

to{

opacity: 0;

transform: scale(2.5,2.5)

}

}

@keyframes mymove3{

from{

opacity: 1;

transform: scale(1,1)

}

to{

opacity: 0;

transform: scale(2.5,2.5)

}

}