.w {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

.page-head {
    width: 1200px;
    position: absolute;
    top: 20px;
    left: 50%;
    margin-left: -600px;
    z-index: 5;
    font-size: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.page-head .nav-menu-box {
    display: inline-block;
}

.page-head .nav-menu-link {
    display: inline-block;
    color: #ffffff;
    font-size: 16px;
    line-height: 20px;
    margin-left: 30px;
    cursor: pointer;
}

.page-head .nav-menu-link:hover,.page-head .nav-menu-link.active {
    color: #ffcf8c;
}

.site-info {
    margin-top: 20px;
    padding: 20px 0;
    background: #efefef;
    text-align: center;
    font-size: 14px;
    line-height: 24px;
}

.site-info .copy-right {
    display: inline-block;
}

.site-info .copy-right img {
    display: inline-block;
    vertical-align: middle;
}