#q21-progress{position:fixed;top:0;left:0;width:0;height:4px;background:#bb1919;z-index:999999;transition:width .08s linear}#q21-top{position:fixed;right:20px;bottom:20px;width:42px;height:42px;border:none;border-radius:50%;background:#bb1919;color:#fff;font-size:20px;cursor:pointer;display:none;z-index:999998;box-shadow:0 2px 8px rgb(0 0 0 / .25)}#q21-top:hover{opacity:.9}