.top-bar{backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(10px);background:hsla(0,0%,100%,.4);box-shadow:0 1px 0 rgba(0,0,0,.1);height:55px;left:0;position:fixed;right:0;top:-55px;transition:top .4s ease-in-out;z-index:1000}.top-bar.active{top:0}