.whirl{position:relative}.whirl:before{content:"";z-index:1;position:absolute;top:0;left:0;display:block;height:100%;width:100%;background-color:#999;opacity:0.6}.whirl:after{z-index:2;content:"";height:40px;width:40px;position:absolute;top:50%;left:50%;margin:-20px 0 0 -20px;-webkit-transition:all .75s ease 0s;transition:all .75s ease 0s;border-radius:100%;border-top:4px solid #555;-webkit-animation:standard .75s infinite linear;animation:standard .75s infinite linear}.whirl.no-overlay:before{content:none;display:none}@-webkit-keyframes standard{from{-webkit-transform:rotate(0deg);transform:rotate(0deg)}to{-webkit-transform:rotate(360deg);transform:rotate(360deg)}}@keyframes standard{from{-webkit-transform:rotate(0deg);transform:rotate(0deg)}to{-webkit-transform:rotate(360deg);transform:rotate(360deg)}}