.acform-loading:after{content:"";width:20px;height:20px;border:4px solid #FFF;border-bottom-color:transparent;border-radius:50%;display:inline-block;box-sizing:border-box;animation:rotation 1s linear infinite;margin:0 20px}@keyframes rotation{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}