.img_see1 {
    width: 100%;
    height: 100%;
    background-image: url(../uploads/化妆与美容.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    transition: all .5s;
}

.img_see2 {
    width: 100%;
    height: 100%;
    background-image: url(../uploads/工业机器人.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    transition: all .5s;
}

.img_see3 {
    width: 100%;
    height: 100%;
    background-image: url(../uploads/电子商务.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    transition: all .5s;
}

.img_see4 {
    width: 100%;
    height: 100%;
    background-image: url(../uploads/高铁.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    transition: all .5s;
}

.img_see5 {
    width: 100%;
    height: 100%;
    background-image: url(../uploads/校园.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    transition: all .5s;
}

.img_see6 {
    width: 100%;
    height: 100%;
    background-image: url(../uploads/食堂.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    transition: all .5s;
}

.img_see7 {
    width: 100%;
    height: 100%;
    background-image: url(../uploads/寝室.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    transition: all .5s;
}

.img_see8 {
    width: 100%;
    height: 100%;
    background-image: url(../uploads/智慧校园.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    transition: all .5s;
}