.loader{height:5px;position:fixed;overflow:hidden;background-color:#edeff0;top:0;left:0;right:0}.loader:before{display:block;position:absolute;content:"";left:-200px;width:200px;height:4px;background-color:#42b0db;animation:loading 2s linear infinite}@keyframes loading{from{left:-200px;width:30%}50%{width:30%}70%{width:70%}80%{left:50%}95%{left:120%}to{left:100%}}