*{
    margin: 0;
    padding: 0;
    list-style: none;
    font-family: 'Arial Normal', 'Arial', sans-serif;
}
.teachers{
    width: 100%;
    height: auto;
    background: white;
}

/*banner*/
.t-img{
    width: 100%;
    height: 300px;
    overflow: hidden;
    position: relative;
}
.t-img>img{
    width: 100%;
    min-height: 100%;
    object-fit: cover;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
.t-title{
    width: 100%;
    height: 200px;
    font-size: 50px;
    line-height: 200px;
    object-fit: cover;
    position: absolute;
    top: 50%;
    left: 50%;
    color: white;
    font-weight: bold;
    padding-left: 100px;
    transform: translate(-50%,-50%);
    /*background: rgba(1,5,8,.3);*/
    letter-spacing:3px;
    text-shadow:  2px 2px 5px #333;
}
/*内容*/
.tra-c{
    width: 80%;
    height: auto;
    margin: auto;
    padding: 50px 0;
}
.tra-ds{
    width: 100%;
    height: auto;
    padding: 50px 0;
}
.title{
    width: 100%;
    height: 100px;
    text-align: center;
    font-weight: bold;
    font-size: 30px;
    line-height: 70px;
    position: relative;
}
.line{
    width: 60px;
    height: 4px;
    background: #D90803;
    border-radius: 10px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}
.e-imgs{
    width: 80%;
    margin: auto;
    display: flex;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}
.imgs-l{
    width: 30%;
    height: 500px;
    overflow: hidden;
    text-align: center;
    position: relative;
}
.imgs-l>img{
    width:97%;
    height: 100%;
    object-fit: cover;
}
.imgs-r{
    width: 70%;
    height: 500px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.imgs-r>div{
    width: 50%;
    height: 50%;
    overflow: hidden;
    text-align: center;
}
.imgs-r>div>img{
    width: 97%;
    height: 100%;
    object-fit: cover;
}
.imgs-r>div:nth-child(1),.imgs-r>div:nth-child(2){
    padding-bottom: 10px;
}
.e-more{
    width: 100%;
    padding-top: 30px;
    text-align: center;
}
.e-more>a{
    width: 150px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    display: inline-block;
    border-radius: 10px;
}
.e-more>a:first-child{
    background: #17428E;
    color: white;
    cursor: pointer;
}
.e-more>a:last-child{
    border: 1px solid #17428E;
    margin-left: 20px;
}
/*学生作品*/
.worklist{
    width: 80%;
    margin: auto;
    padding: 50px 0;
}
.list-imgs{
    width: 100%;
    height: auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
}
.li-i{
    width: 20%;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.li-i>div{
    width: 90%;
    height: 90%;
    overflow: hidden;
    position: relative;
}
.li-i>div>img{
    width: 100%;
    min-height: 100%;
    object-fit: cover;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
@media screen and (max-width: 1480px) {

}
@media screen and (max-width: 1280px) {
    .t-img{
        height: 190px;
    }
    .li-i{
        height: 300px;
    }
}
@media screen and (max-width: 990px) {

    .li-i{
        height: 210px;
    }
}
@media screen and (max-width:768px) {
    .t-img{
        height: 145px;
    }
    .tra-c{
        width: 100%;
    }
    .t-title{
        font-size: 35px;
    }
    .title{
        font-size: 28px;
    }
    .e-imgs{
        width: 90%;
    }
    .imgs-l{
        width: 40%;
    }
    .li-i{
        width: 25%;
        height: 225px;
    }
}
@media screen and (max-width:500px) {
    .t-img{
        height: 100px;
    }
    .e-imgs{
        flex-wrap: wrap;
    }
    .imgs-l{
        width: 100%;
        height: 300px;
    }
    .imgs-r{
        width: 100%;
    }
    .imgs-l>img{
        width: 100%;
    }
    .imgs-r>div>img{
        width: 100%;
    }
    .imgs-r>div:nth-child(1), .imgs-r>div:nth-child(2){
        padding: 0;
    }
    .title{
        height: 80px;
        font-size: 23px;
        line-height: 50px;
    }
    .e-more>a:last-child{
        margin-left: 0;
        margin-top: 20px;
    }
    .li-i{
        width: 50%;
        height: 260px;
    }
}
@media screen and (max-width:400px) {
    .t-img{
        height: 70px;
    }
    .li-i{
        height: 180px;
    }
}