.fukuan {
    background: rgba(0, 0, 0, 0.85);
    height: 100%;
    left: 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 9999;
}
.fukuan h3 {
    text-align: left;
}
.neibuk {
    background: #fff;
    height: auto;
    margin: 80px auto;
    padding: 10px 20px;
    position: relative;
    text-align: center;
    width: 680px;
}
#closewind{
    z-index:99;
    color:#000;
    cursor:pointer;
    position: absolute; 
    right: 10px;
    border: 1px solid #999;
    padding: 2px 5px;
}