.spinner{--first-block-clr:var(--color-neutral-500);--second-block-clr:var(--color-neutral-900);--size:18px;width:100px;height:100px;position:relative}.spinner:after,.spinner:before{background:var(--first-block-clr);box-sizing:border-box;content:"";height:var(--size);width:var(--size);animation:2.4s cubic-bezier(0,0,.24,1.21) infinite up;position:absolute;top:50%;left:50%}.spinner:after{background:var(--second-block-clr);left:calc(50% - var(--size));top:calc(50% - var(--size));animation:2.4s cubic-bezier(0,0,.24,1.21) infinite down}@keyframes down{0%,to{transform:none}25%{transform:translate(100%)}50%{transform:translate(100%)translateY(100%)}75%{transform:translateY(100%)}}@keyframes up{0%,to{transform:none}25%{transform:translate(-100%)}50%{transform:translate(-100%)translateY(-100%)}75%{transform:translateY(-100%)}}