Анимированный онлайн индикатор

.messageUserBlock div.avatarHolder .onlineMarker
{
    display: inline-block;
    width: 16px;
    height: 16px;
/*    margin: 9px 0 0 9px; <- if you'd like it on top left */
    margin: 79px 0 0 79px;
    background: #fff;
    border: none!important;
    border-radius: 50%!important
}
         
.messageUserBlock div.avatarHolder .onlineMarker:before
{
    content: '';
    position: absolute;
    width...