.bt-header{padding:0;height:5.5rem;background-color:#289172;background-image:none;border:none;top:0;z-index:100}.bt-logo{position:absolute;left:50%;margin-left:-3.5rem;top:.5rem;width:7rem;z-index:10}.bt-logo.ng-enter{animation:fadeIn 150ms}.bt-logo.ng-leave{animation:fadeOut 150ms}