input.switch:empty
{
    margin-left: -99999px;
}

input.switch:empty ~ label
{
    position: relative;
    float: left;
    line-height: 1.6em;
    text-indent: 4em;
    margin: 0.2em 0;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

input.switch:empty ~ label:before, 
input.switch:empty ~ label:after
{
    position: absolute;
    display: block;
    top: 0;
    bottom: 0;
    left: 0;
    content: ' ';
    width: 3.6em;
    background-color: #999;
    border-radius: 0.8em;
#    box-shadow: inset 0 0.2em 0 rgba(0,0,0,0.3);
    -webkit-transition: all 100ms ease-in;
    transition: all 100ms ease-in;
}

input.switch:empty ~ label:after
{
    width: 1.4em;
    top: 0.1em;
    bottom: 0.1em;
    margin-left: 0.1em;
    background-color: #fff;
    border-radius: 0.8em;
    box-shadow: inset 0 -0.2em 0 rgba(0,0,0,0.2);
}

input.switch:checked ~ label:before
{
    background-color: #2B2;
}

input.switch:checked ~ label:after
{
    margin-left: 2em;
}