.loader{display:none;position:fixed;top:0;left:0;right:0;width:100%;height:7px;z-index:2000;overflow:hidden;background-color:#ddd}.loader:before{content:"";height:7px;left:-200px;width:200px;display:block;position:absolute;background-color:#2980b9;animation:loading 1s linear infinite}@keyframes loading{from{left:-200px;width:30%}50%{width:30%}70%{width:70%}80%{left:50%}95%{left:120%}to{left:100%}}