CSS Slider Switch

Slider on/off switch using CSS.

HTML

<label id="sliderLabel">
    <input type="slider" />
    <span id="slider"></span>
    <span id="sliderOn">On</span>
    <span id="sliderHalf">Half</span>
    <span id="sliderOff">Off</span>
</label>

CSS

#sliderLabel {
    border: 2px solid black;
    -webkit-border-radius: 7px;
    -moz-border-radius: 7px;
    border-radius: 7px;
    cursor: pointer;
    display: block;
    height: 30px;
    margin: 20px auto;
    overflow: hidden;
    position: relative;
    width: 80px;
}
#sliderLabel input {
    display: none;
}
#sliderLabel input:checked + #slider {
    left: 36px;
}
#slider {
    background: #c0c6c3;
    -moz-border-radius: 7px;
    display: block;
    height: 30px;
    left: -4px;
    position: absolute;
    top: 0px;
    -moz-transition: left .25s ease-out;
    -webkit-transition: left .25s ease-out;
    transition: left .25s ease-out;
    width: 48px;
    z-index: 1;
}
#sliderOn, #sliderOff {
    color: white;
    display: block;
    font-family: verdana, arial, sans-serif;
    font-size: 14px;
    font-weight: bold;
    line-height: 30px;
    position: absolute;
    text-align: center;
    top: 0px;
    width: 40px;
}
#sliderOn {
    background: #002400;
    background: -moz-linear-gradient(top,  #002400 0%, #008a00 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#002400), color-stop(100%,#008a00));
    background: -webkit-linear-gradient(top,  #002400 0%,#008a00 100%);
    background: -o-linear-gradient(top,  #002400 0%,#008a00 100%);
    background: -ms-linear-gradient(top,  #002400 0%,#008a00 100%);
    background: linear-gradient(top,  #002400 0%,#008a00 100%);
    left: 0px;
}
#sliderOff {
    background: #870000;
    background: -moz-linear-gradient(top,  #870000 0%, #ff0000 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#870000), color-stop(100%,#ff0000));
    background: -webkit-linear-gradient(top,  #870000 0%,#ff0000 100%);
    background: -o-linear-gradient(top,  #870000 0%,#ff0000 100%);
    background: -ms-linear-gradient(top,  #870000 0%,#ff0000 100%);
    background: linear-gradient(top,  #870000 0%,#ff0000 100%);
    right: 0px;
}