.qwerrr{min-height:100vh;background:#111}.container,.qwerrr{display:flex;justify-content:center;align-items:center}.container{position:relative;flex-direction:row}.container .box{width:100%;height:100%;display:flex;justify-content:center;align-items:center;margin:50px 0}.container .box span{position:absolute;box-sizing:border-box;border:2px solid #fff;border-radius:50%;animation:animate 5s linear infinite;animation-delay:calc(0.5s*var(--i))}.container .box:nth-child(2) span{border:none;background:rgba(0,255,0,.25)}@keyframes animate{0%{width:0;height:0}50%{opacity:1}to{width:100%;height:100%;opacity:0}}