.message-box {
        display: none;
        position: fixed;
        left: 0px;
        top: 0px;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99999;
    }
    .message-box.open {
        display: block;
    }
    .message-box .mb-container {
        position: absolute;
        left: 0px;
        top: 35%;
        background: rgba(0, 0, 0, 0.9);
        padding: 20px;
        width: 100%;
    }
    
    .message-box .mb-container .mb-middle {
        width: 100%;
        color: #FFF;
    }
    .message-box .mb-container .mb-middle .mb-title {
        width: 100%;
        float: left;
        padding: 10px 0px 0px;
        font-weight: 400;
        font-size: 15px;
        line-height: 18px;
    }
    .message-box .mb-container .mb-middle .mb-title .fa,
    .message-box .mb-container .mb-middle .mb-title .glyphicon {
        font-size: 18px;
        float: left;
        margin-right: 10px;
    }
@media (min-width: 768px) {
    .message-box .mb-container .mb-middle {
        width: 50%;
        left: 25%;
        position: relative;
    }
    .message-box .mb-container .mb-middle .mb-title {
        font-size: 31px;
        line-height: 36px;
    }
    .message-box .mb-container .mb-middle .mb-title .fa,
    .message-box .mb-container .mb-middle .mb-title .glyphicon {
        font-size: 38px;
    }
}
    .message-box .mb-container .mb-middle .mb-content {
        width: 100%;
        float: left;
        padding: 10px 0px 0px;
        line-height: 16px;
    }

    .mb-content {
        overflow: auto;
    }

    .message-box .mb-container .mb-middle .mb-content p {
        margin-bottom: 0px;
    }
    .message-box .mb-container .mb-middle .mb-footer {
        float: right;
        padding: 10px 0px;
    }
    .message-box .mb-container .mb-middle .mb-footer .btn-separator {
        width: 5px; 
        height: 40px; 
        float: left;
    }
    .message-box.message-box-warning .mb-container {
        background: rgba(254, 162, 35, 0.9);
    }
    .message-box.message-box-danger .mb-container {
        background: rgba(182, 70, 69, 0.9);
    }
    .message-box.message-box-info .mb-container {
        background: rgba(63, 186, 228, 0.9);
    }
    .message-box.message-box-success .mb-container {
        background: rgba(149, 183, 93, 0.9);
    }