.spinner{box-sizing:border-box;display:block;margin:0 auto;width:2em;height:2em;border-width:.25em;border-style:solid;border-radius:50%;animation:rotate 1.2s linear infinite;border-color:currentColor currentColor currentColor rgba(0,0,0,0)}@keyframes rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}