body {
    background-color: #b7a5a3;
}


.qb {
    width: 1000px;
    margin: 0 auto;
    padding: 5px;
}

.qb ul {
    padding: 0;
    margin: 20px;
    height: 30px;
    margin: 20px 0;
}

.qb ul li {
    float: left;
    width: 166px;
    text-align: center;
    list-style: none;
}

.qb ul li:hover {
    background-color: white;
    border-radius: 15px;
}

.qb ul li:hover a {
    color: #313336;
}

.qb ul li.active {
    background-color: white;
    border-radius: 15px;
}

.qb ul li.active a {
    color: #313336;
}

.qb ul li a {
    color: white;
    font-weight: bold;
    font-size: 18px;
    text-decoration: none;
}

.qb_1 {
    width: 1050px;
    height: 1100px;
    padding: 40px;
    margin: 0 auto;
    box-sizing: border-box;
    border-radius: 20px;
    background-color: white;
}

.ta{
    height: 500px;
}