.my-slider-progress{background:#ccc;position:absolute;bottom:-50px;width:75%;left:20px;height:2px}.my-slider-progress-bar{position:absolute;bottom:-5px;width:100px;height:10px;background:#4723b5;color:#fff;text-align:center;line-height:10px;border-radius:10px;transition:left .4s ease;left:0}