.blockui-message .message-content {
    width: 170px;
    margin-left: auto;
    margin-right: auto;
    display: block;
    background: #fefefe;
    border: 1px solid #ddd;
    color: #444;
    text-align: left;
    padding: 15px;
}

    .blockui-message .message-content .text-semibold {
        padding-left: 10px;
        font-size:18px;
        position:relative;
        top:3px;
        font-weight:500;
    }