.wrap {
    width: 100%;
}

section {
    width: 100%;
}

.main {
    width: 1200px;
    margin: auto;
}

.pub {
    font-size: 14px;
    line-height: 60px;
}

.search {
    width: 100%;
    height: 64px;
    padding-top: 32px;
}

.tab_module {
    width: 100%;
}

.all {
    width: 100%;
    display: block;
}

.optional {
    width: 100%;
    display: none;
}

.required {
    width: 100%;
    display: none;
}

.main_class {
    width: 100%;
    height: 1230px;
    position: relative;
    margin-bottom: 100px;
}

.search1 {
    width: 248px;
    height: 32px;
    float: right;
    position: relative;
}

.input_1 {
    width: 246px;
    height: 30px;
    border: solid 1px #b7b7b7;
    border-radius: 15px;
    text-indent: 15px;
    /*cursor: pointer;*/
}

.pic {
    width: 19px;
    height: 19px;
    position: absolute;
    top: 5.5px;
    right: 15px;
    cursor: pointer;
}

.tab_img {
    width: 66px;
    height: 19px;
    float: right;
    position: relative;
}

.pic1 {
    display: block;
    margin: auto;
}

.pic2 {
    position: absolute;
    top: 0;
    left: 0;
    cursor: pointer;
}

.pic3 {
    position: absolute;
    top: 0;
    right: 0;
    cursor: pointer;
}

.teacher {
    width: 100%;
}

.tea_nav {
    width: 100%;
}

.tea_nav > li {
    width: 222px;
    margin-right: 22.5px;
    margin-bottom: 68px;
    cursor: pointer;
    float: left;
}

.tea_nav > li:nth-child(5) {
    margin-right: 0px;
}

.tea_nav > li:nth-child(10) {
    margin-right: 0px;
}

.tea_pic {
    width: 222px;
    height: 222px;
    margin-bottom: 5px;
}

.tea_teacher {
    font-size: 16px;
    color: #333333;
    line-height: 30px;
}

.tea_nav > li > p {
    font-size: 14px;
    color: #999999;
    margin-bottom: 10px;
}

.tea_btn {
    width: 220px;
    height: 26px;
    border: solid 1px #2a72f5;
    font-size: 14px;
    background: #f0f0f0;
    color: #2a72f5;
}

.tea_nav > li:hover .tea_teacher {
    color: #2a72f5;
}

.tea_nav > li:hover .tea_btn {
    background: #2a72f5;
    color: #ffffff;
}

.tea_nav > li:hover {
    box-shadow: 2px 10px 8px 0px #ccc;
    display: inline-block;
    transform: scale(1.03, 1.03);
    transition: 0.5s;
}

.sorter {
    width: 100%;
    height: 30px;
    margin-bottom: 20px;
}