.mask{
        border-style: none;
    border-color: inherit;
    border-width: 0;
    padding: 0;
    font-size: 100%;
    text-decoration: none;
    margin-left: 0;
    margin-right: 0;
    margin-top: 0;

}
/*弹出层↓*/
#titlebar
        {
            margin-bottom: 10px;
            background: #f8fafe;
            border-bottom: 1px solid #e5e5e5;
            min-height: 46px;
            min-height: 20px;
            padding: 13px 20px;
            vertical-align: bottom;
            position: relative;
            border-radius: 6px 6px 0px 0px/6px 6px 0px 0px;
        }
        #titlebar > .heading
        {
            font-size: 14px;
            line-height: 20px;
            font-weight: bold;
        }
        #titlebar > .heading > .prefix
        {
            display: inline-block;
            margin-right: 5px;
            color: #666;
            font-size:15px;
        }
        .close {
    -webkit-appearance: none;
    padding: 0;
    cursor: pointer;
    background: 0;
    border: 0;
    float: right;
    font-size: 19.5px;
    font-weight: 700;
    line-height: 1;
    color: #000;
    text-shadow: 0 1px 0 #fff;
    filter: alpha(opacity=20);
    opacity: .2;
}
/*弹出层↑*/