body {
    background-color: #f1f2f6;
}

#public_header {
    background-color: #ffffff;
}

#tk {
    width: 1195px;
    margin: 0 auto;
}

#tk .div1 {
    margin-top: 50px;
}

#tk .div1 ul {
    list-style: none;
}

#tk .div1 li {
    display: inline-block;
    margin-right: 30px;
}

#tk .div1 a {
    text-decoration: none;
    color: #808080;
    padding: 5px 10px;
}

#tk .div1 a:hover {
    background-color: #004299;
    border-radius: 5px;
    color: #ffffff;
}

#tk .div1 .choose {
    padding: 5px 10px;
    border-radius: 5px;
    background-color: #004299;
    color: #ffffff;
}

#tk .div2 {
    padding: 20px;
    background-color: #ffffff;
    margin-top: 30px;
}

#tk .div2_div1 {
    display: flex;
    justify-content: space-between;
}

#tk .div2_div1 div, #tk .div2_div1 div img {
    width: 270px;
}

#tk .div2_div1 div img {
    transition: all 0.5s;
    width: 100%;
}

#tk .div2_div1 div img:hover {
    transform: scale(1.1);
}

#tk .div2_div2 {
    margin-top: 30px;
}

#tk .div2_div2, #tk .div2_div2 img {
    width: 100%;
}