.main-header{transition:background-color .3s ease,box-shadow .3s ease}.main-header.scrolled{background-color:#fff!important;box-shadow:0 2px 10px rgba(0,0,0,.08)}.main-header.scrolled .navigation>li>a,.main-header.scrolled .tf-btn.btn-login,.main-header.scrolled a{color:#000!important}.main-header.scrolled .logo img{content:url(/images/logo/logo@2x.png)}