#headerBox, #mainBox, #footBox {
    box-sizing: border-box;
}

#headerBox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background-color: midnightblue;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#headerBox img {
    width: 200px;
}

#headerBox ul {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 50%;
    height: 100%;
    margin-right: 50px;
}

#headerBox ul li {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 25%;
    height: 100%;
    cursor: pointer;
}

#headerBox ul li a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    color: #fff;
}

#headerBox ul li.active {
    background-color: blue;
}

#mainBox {
    width: 100%;
    margin: 80px 0;
}

#footBox {
    position: fixed;
    bottom: 0;
    left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 80px;
    background-color: midnightblue;
    padding: 0 20px;
}

#footBox .foot-box {
    display: inline-block;
    font-size: 14px;
    text-align: center;
    color: #fff;
}

.icpbeian-box a {
    color: #fff;
}