.isg a{  overflow: hidden;
    display: block;}
.isg:hover img{transform: scale(1.2);transition: transform 0.5s ease-out;}
.li2:hover img {
    transform: scale(1.2);
    transition: transform 0.5s ease-out;}
   .li2 a {
    overflow: hidden;
    display: block;}
   .stu_t:hover img {
        transform: scale(1.2);
        transition: transform 0.5s ease-out;}

    .stu_t a {
        overflow: hidden;
        display: block;
        width: 100%;
        height: 100%;}