.sever-content {
    background: url('../img/bg-kf.jpg') no-repeat 0 0;
    height: 700px;
    position: relative;
}

.list-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1000px;
    height: 450px;
    display: flex;
    justify-content: space-around;
    align-content: space-around;
    flex-direction: column;
    flex-wrap: wrap;
}

.list-content li {
    width: 300px;
    height: 200px;
    background: #6d98e7;
    text-align: center;
    line-height: 200px;
    font-size: 40px;
    color: #fff;
    transition: all .5s;
    cursor: pointer;
    border-radius: 10px;
}
.list-content li:nth-child(2){
    animation: donghua 0.5s cubic-bezier(0.26, -0.38, 0.16, 1.81) .2s forwards;
}
.list-content li:nth-child(3){
    animation: donghua 0.5s cubic-bezier(0.26, -0.38, 0.16, 1.81) .4s forwards;
}
.list-content li:nth-child(4){
    animation: donghua 0.5s cubic-bezier(0.26, -0.38, 0.16, 1.81) .6s forwards;
}
.list-content li:nth-child(5){
    animation: donghua 0.5s cubic-bezier(0.26, -0.38, 0.16, 1.81) .8s forwards;
}

.list-content li:not(:first-child):hover {
    transform: translateY(10px);
    box-shadow: 1px 1px 10px 1px #555;
}

.list-content li:nth-child(1) {
    width: 300px;
    height: 425px;
    background: #4e9cef;
    line-height: 425px;
}

.list-content li:nth-child(3) {
    background: #29cbce;
}

.list-content li:nth-child(4) {
    background: #ffc933;
}

.list-content li:nth-child(2) p:nth-child(1) {
    line-height: 120px;
    font-size: 20px;
}

.list-content li:nth-child(2) p:nth-child(2) {
    line-height: 0px;
    font-size: 16px;
}

.list-content li:nth-child(3) p:nth-child(1) {
    line-height: 120px;
    font-size: 20px;
}

.list-content li:nth-child(3) p:nth-child(2) {
    line-height: 0px;
    font-size: 20px;
}

.list-content li:nth-child(4) p:nth-child(1) {
    line-height: 120px;
    font-size: 20px;
}

.list-content li:nth-child(4) p:nth-child(2) {
    line-height: 0px;
    font-size: 20px;
}

.list-content li:nth-child(5) p:nth-child(1) {
    line-height: 120px;
    font-size: 20px;
}

.list-content li:nth-child(5) p:nth-child(2) {
    line-height: 0;
    font-size: 20px;
}

/* @keyframes donghua {
    from {
        transform: scale(0.6); 
    }
    to {
        transform: scale(1)
    }
} */