.led-red {
    margin: 20px auto;
    width: 12px;
    height: 12px;
    background-color: #940;
    border-radius: 50%;
    box-shadow: #000 0 -1px 7px 1px, inset #600 0 -1px 9px, #F00 0 2px 12px;
}

.led-yellow {
    margin: 20px auto;
    width: 12px;
    height: 12px;
    background-color: #A90;
    border-radius: 50%;
    box-shadow: #000 0 -1px 7px 1px, inset #660 0 -1px 9px, #DD0 0 2px 12px;
}

.led-green {
    margin: 20px auto;
    width: 12px;
    height: 12px;
    background-color: #690;
    border-radius: 50%;
    box-shadow: #000 0 -1px 7px 1px, inset #460 0 -1px 9px, #7D0 0 2px 12px;
}

.led-blue {
    margin: 20px auto;
    width: 12px;
    height: 12px;
    background-color: #4AB;
    border-radius: 50%;
    box-shadow: #000 0 -1px 7px 1px, inset #006 0 -1px 9px, #06F 0 2px 14px;
}