#tl-reading-progress{position:fixed;top:0;left:0;width:100%;height:4px;z-index:999999;background:rgba(31,58,47,.12)}#tl-reading-progress span{display:block;width:0;height:100%;background:linear-gradient(90deg,#ffd180,#ffa54d,#ff7a00);box-shadow:0 0 6px rgba(0,0,0,.25)}