html,body {
        height: 100%;
    }
    h3 {
        margin: 0;
        padding: 0;
    }
    .dialog {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 300px;
        background-color: #eee;
        box-shadow: 0 0 5px 2px rgba(0, 0, 0, 0.5);
        border-radius: 5px;
        padding-bottom: 10px;
        border-radius: 5px;
        cursor: pointer;
        z-index: 9;
        -ms-user-select: none;  /*禁止选择*/
        -webkit-user-select: none;
        -moz-user-select: none;
    }
    .dialog .dialog-header {
        padding: 10px 19px;
        color: #fff;
        background: #676666;
    }
    .dialog .dialog-header .close {
        position: absolute;
        right: 10px;
        top: 5px;
        font-size: 20px;
    }
    .dialog .dialog-content {
        padding: 10px;
        margin: 13px;
        font-size: 11px;
    }
    .dialog .dialog-footer {
        text-align: center;
        margin-bottom: 10px;
    }
    .btn {
        text-decoration: none;
        color: #fff;
        background-color: #e33100;
        font-size: 14px;
        padding: 10px 20px;
        margin-right: 10px;
        border-radius: 5px;
    }