.message_center {
    position: relative;
}

.message_center .BellAlarmRedMark {
    position: absolute;
    margin-left: 10px;
    background-color: #ff0000;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    top: 6px;
    left: 12px;
}