.weixin-tip {
        display: none;
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.8);
        filter: alpha(opacity=80);
        height: 100%;
        width: 100%;
        z-index: 100;
    }
    
    .weixin-tip p {
        text-align: center;
        margin-top: 10%;
        padding: 0 5%;
    }
    
    .weixin-tip img {
        max-width: 100%;
    }