input:invalid{border:2px solid rgba(255,0,0,.3);border-radius:3px}button:disabled,button:hover:disabled{background-color:#777}input[type=range]{border:0}input[type=range]::-moz-range-thumb{position:absolute;width:20px;height:20px;background-color:#ff9c00;border-radius:20px;border-color:transparent}input[type=range]::-moz-range-track{position:absolute;cursor:pointer;background-color:#d9d9d9;height:.6em}