.sxj_msgbox_overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 999;
}

.sxj_msgbox_window {
    display: none;
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    z-index: 1000;
    text-align: center;
    max-width: 600px;
    word-wrap: break-word;
}

.sxj_msgbox_window h2 {
    margin-top: 0;
    color: #333;
}

.sxj_msgbox_window p {
    margin-bottom: 1em;
}

.sxj_msgbox_control {
    margin-top: 1em;
}