html, body{
    padding: 0;
    margin: 0;
}
body{
    background: #f3f3f3;
}
.wrap-header {
    width: 100%;
    height: 6rem;
    position: fixed;
    background-color: #0d71bb;
}
.wrap-header h3 {
    font-size: 2rem;
    color: #ffffff;
    padding-left: 2rem;
    line-height: 2rem;
}
.main-contain{
    width: 80%;
    height: auto;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
    align-items: stretch;

}
.subNav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding-left: 1.2rem;
}
.subNav,.content{
    height: auto;
    margin-top: 10rem;
    margin-left:5px;
    margin-right:5px;
}
.part a {
    font-size: 1.3rem;
    font-weight: 500;
    border: none;
}
.left{
    width: 20rem;
    display: inline-block;
    vertical-align: top;

}
.subNav{
    height: auto;
    background-color: white;
    padding: 10px;
    width: 17rem;
    position: fixed;
}
.content{
    margin-left: 20rem;
    width: 80%;
    background-color: white;
    display: inline-block;

}
.part{
    text-align: left;
    line-height: 60px;
    border-bottom: 1px solid #d9d9d9;
    color: #000000;
    width: 100%;
}
a{
    text-decoration: none;
    color:black;
    display: block;
}
.part:hover{
    background: #eeeeee;
    cursor: pointer;
}
.part:visited {
    background: #eeeeee;
}
.part4{
    border: none;
}
.text{
    line-height: 30px;
    width: 80%;
    margin: 25px auto;
    height: auto;
    min-height: 500px;
}
.anchor{
    display: block;
    height: 7rem; /*和顶部fix的高度一致*/
    margin-top: -60px; /*和顶部fix的高度一致*/
    visibility: hidden;
}
.container2,.container4{
    background: #ffffff;
}
.title{
    line-height: 40px;
}
.container2,.container4{
    overflow: hidden;
}
.images {
    width:80%;
    margin: 10px auto;
}
.ques {
    color: #1597f8;
    font-size: 1.2rem;
    padding: 1rem 0;
}
.strong {
    color: #f57f00;
}
.big-p {
    font-size: 1.2rem;
    font-weight: 400;
}
.yanzheng-image {
    display: flex;
    flex-direction: row;
    padding: 3rem;
}
.yanzheng-image img {
    width: 50%;
}