div.c img { }
div.c .avatar_preview_admin{
    display: block;
    width: 50px;
    height: 50px;
    float: left;
    margin-left: 5px;
    margin-bottom: 5px;
    position: relative;
}
div.c .avatar_preview_admin img{
    position: relative;
}
div.c .avatar_preview_admin span{
    position: absolute;
    top: 0;
    left: 0;
    background: #FFF;
    color: #333;
    padding: 0px 5px;
}