/*应用案例*/
.case-container{

}
.case-list{
    margin-top: 3rem;
}
.case-list ul{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.case-list ul li{
    width: calc(33.333% - 1.5rem);
    margin-bottom: 3rem;
}
.case-list ul li a{
    position: relative;
    display: block;
    height: 100%;
}
.case-list ul li a::after{
    position: absolute;
    content: '';
    left: 0;
    bottom: 0;
    opacity: 1;
    width: 100%;
    height: 50%;
    z-index: 5;
    background: linear-gradient(rgba(0,0,0,0) 0%,rgba(0,0,0,0.3) 70%);
}
.case-list ul li:nth-child(1),
.case-list ul li:nth-child(4){
    width: calc(66.666% - 1.5rem);
}
.case-list ul li a .text{
    position: absolute;
    bottom: 2.5rem;
    left: 2.5rem;
    z-index: 6;
    transition: all 500ms ease 0s;
    font-size: 1.8rem;
    color: #FFF;
}
.case-list ul li a:hover .text{
    bottom: 3.5rem;
}