.body-container-wrapper>div>div:first-child{position:sticky;top:0;z-index:1020;height:0}.body-container-wrapper>div>div:first-child>div>div{font-size:0;padding:0 !important;min-height:0 !important}.reading-progress{width:100%;height:5px;-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background-color:transparent}.reading-progress::-webkit-progress-bar{background-color:transparent}