.loading_no_scrolling{overflow-y:hidden!important}#course_wrapper{overflow-x:hidden}@media only screen and (max-width:1024px){#course_wrapper{text-size-adjust:100%;-webkit-text-size-adjust:100%}}#preloader{background-color:#fff;width:100%;height:100%;position:fixed;display:flex;align-items:center;justify-content:center;z-index:600}@keyframes loader{0%,10%,100%{width:5em;height:5em}65%{width:9.375em;height:9.375em}}@keyframes loaderBlock{0%,30%{transform:rotate(0)}55%{background-color:#00858b}100%{transform:rotate(90deg)}}@keyframes loaderBlockInverse{0%,20%{transform:rotate(0)}55%{background-color:#a5c9c9}100%{transform:rotate(-90deg)}}.loader{position:absolute;top:50%;left:50%;width:5em;height:5em;transform:translate(-50%,-50%) rotate(45deg) translate3d(0,0,0);animation:loader 1.2s infinite ease-in-out}.loader span{position:absolute;display:block;width:2.53125em;height:2.53125em;background-color:#94483b;animation:loaderBlock 1.2s infinite ease-in-out both}.loader span:nth-child(2),.loader span:nth-child(3){animation:loaderBlockInverse 1.2s infinite ease-in-out both}.loader span:nth-child(1){top:0;left:0}.loader span:nth-child(2){top:0;right:0}.loader span:nth-child(3){bottom:0;left:0}.loader span:nth-child(4){bottom:0;right:0}