.online {
    width: 10px;
    height: 10px;
    border-radius: 6px;
    box-shadow: 1px 1px 1px rgba(0,0,0,0.5);
    background-color: #900;
    margin: 0 5px -2px 0;
    display: inline-block;
    border: 1px solid #600000;
}