.switch{position:relative;display:inline-block;width:40px;height:20px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background-color:#ccc;transition:.4s;border-radius:20px}.slider:before{position:absolute;content:"";height:14.3px;width:14.3px;left:3px;bottom:.2em;background-color:#fff;transition:.4s;border-radius:50%}input:checked+.slider{background-color:#2196f3}input:checked+.slider:before{transform:translate(18px)}.slider.round{border-radius:20px}.slider.round:before{border-radius:50%}