.battery:after {
    background-color: #fff;
    border: 2px solid #000;
    content: "";
    display: block;
    height: 16px;
    position: absolute;
    right: -6px;
    top: 6px;
    width: 6px;
}
.battery {
    background-color: #fff;
    border: 2px solid #000;
    height: 32px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    width: 100px;
}

.battery .battery-level {
    background-color: #666;
    height: 100%;
}
.battery .battery-level.high {
    background-color: #66CD00;
}
.battery .battery-level.medium {
    background-color: #FCD116;
}
.battery .battery-level.low {
    background-color: #FF3333;
}

.battery .battery-level {
    text-align: center;
}