.led {
    display: none;
    margin: 0 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
}
.led-green {
    display: inline-block;
    background-color: #ABFF00;
    box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #304701 0 -1px 9px, #89FF00 0 2px 12px;
}
.led-yellow {
    display: inline-block;
    background-color: #FF0;
    box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #808002 0 -1px 9px, #FF0 0 2px 12px;
}
.led-red {
    display: inline-block;
    background-color: #F00;
    box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #441313 0 -1px 9px, rgba(255, 0, 0, 0.5) 0 2px 12px;
}
@media only screen and (max-width:600px) {
    .led{width:12px;height:12px;margin:0 3px;}
}