.controls{background:#00000080;bottom:-100px;transition:all .3s ease-in-out}.controls .play-backspeed:hover{cursor:pointer}.controls .play-backspeed:hover .play-backspeed-list{cursor:pointer;display:flex}.controls .volume{width:24px;overflow:hidden}.controls .volume .volume-range{width:0;transition:all .3s}.controls .volume .volume-range::-webkit-slider-thumb{opacity:0}.controls .volume:hover{width:auto}.controls .volume:hover .volume-range{width:130px}.controls .volume:hover .volume-range::-webkit-slider-thumb{opacity:initial}