#preloader{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999999;background-color:rgba(0,0,0,.4)}
.loader{position:relative;top:50%;margin:0 auto;width:50px;height:50px;border-radius:100%}
#loader-1:after,#loader-1:before{position:absolute;top:-10px;left:-10px;width:100%;height:100%;border:7px solid transparent;border-radius:100%;content:"";border-top-color:#003091}
#loader-1:before{z-index:100;animation:spin 1s infinite}
#loader-1:after{border:7px solid #f2f2f2}
@keyframes spin{0%{-webkit-transform:rotate(0);-o-transform:rotate(0);transform:rotate(0);-ms-transform:rotate(0)}
  100%{-webkit-transform:rotate(360deg);-o-transform:rotate(360deg);transform:rotate(360deg);-ms-transform:rotate(360deg)}
}