div {
	margin:0;
    background: repeating-radial-gradient(circle, black, transparent 10%);
	animation-name: lol;
    animation-duration: 0.2s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
    height:100vh;
    width:100%;
}
body{
    overflow:hidden;
}

@keyframes lol{
    0%{transform:scale(1.1);}
    100%{transform:scale(2.1);}
}