.main ul {
    /* width: 1225px; */
    padding: 40px 0 60px;
}

.main li {
    width: 285px;
    height: 407px;
    background: #FFFFFF;
    box-shadow: 0px 2px 9px 1px rgba(114, 117, 121, 0.2);
    border-radius: 8px;
    float: left;
    box-sizing: border-box;
    position: relative;
    margin-right: 19px;
    margin-top: 60px;
}

.main li:nth-child(4n) {
    margin-right: 0;
}

.main li:nth-child(1),
.main li:nth-child(2),
.main li:nth-child(3),
.main li:nth-child(4) {
    margin-top: 0;
}

.content_title {
    padding: 0 14px;
}

.content_title .js {
    width: 257px;
    padding: 0 21px 0px 7px;
    height: 230px;
    margin-top: 20px;
}

.content_title .js p {
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #333333;
    line-height: 27px;
    text-indent: 2rem;
}

.stud_img {
    float: left;
}

.stud_img img {
    width: 122px;
    height: 122px;
    border-radius: 50%;
    display: block;
    margin-top: -40px;
}

.stud_text {
    float: left;
    display: flex;
    display: -webkit-flex;
    justify-content: center;
    flex-flow: column;
    margin: 15px 0;
}

.stud_text p {
    font-size: 20px;
    font-family: Source Han Sans CN;
    font-weight: bold;
    color: #3b90d1;
}

.stud_text span {
    font-size: 16px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: #333333;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    word-break: break-all;
    width: 158px;
}

.sud_line {
    width: 5px;
    height: 44px;
    background: #3b90d1;
    border-radius: 3px;
    position: absolute;
    top: 108px;
    right: 15px;
}

.changebtn {
    margin-top: 30px;
    margin-bottom: 16px;
    display: block;
    float: right;
    font-size: 14px;
    font-weight: 400;
    color: #666666;
    line-height: 20px;
    cursor: pointer;
    position: relative;
}

.changebtn:hover {
    color: #3b90d1;
}

.nui-scroll {
    width: 200px;
    height: 310px;
    overflow: auto;
    color: #333;
}

.nui-scroll::-webkit-scrollbar {
    width: 5px;
    height: 8px;
}

.nui-scroll::-webkit-scrollbar-thumb {
    background-color: #3b90d1;
    border-radius: 10px;
    height: 26px;
}

.nui-scroll:hover::-webkit-scrollbar-thumb {
    background-color: #3b90d1;
    border-radius: 10px;
}

.nui-scroll::-webkit-scrollbar-thumb:hover {
    background-color: #3b90d1;
}

.nui-scroll::-webkit-scrollbar-track {
    border-radius: 10px;
}

.stud_wrap {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid #D8D8D8;
}