#weixin-tip {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    background: rgba(0, 0, 0, 0.8);
    filter: alpha(opacity=80);
    width: 100%;
    height: 100%;
    z-index: 100;
}

#weixin-tip p {
    text-align: center;
    margin-top: 10%;
    padding: 0 5%;
    position: relative;
}

#weixin-tip img {
    max-width: 100%;
    height: auto;
}

#weixin-tip .close {
    color: #fff;
    padding: 5px;
    font: bold 20px/20px simsun;
    text-shadow: 0 1px 0 #ddd;
    position: absolute;
    top: 0;
    left: 5%;
}