@media only screen and (max-width: 760px) {
    .PC{
        display: none;
    }
    body{
        width:760px;
        background-image: url("indexBg.jpg");
        background-position: top center;
        background-repeat: no-repeat;
        background-color: #041543;
    }
    .top{
        background-image: url("topBg.jpg");
        text-align: center;
         padding:5px 0px 10px;
    }
    .top img{
        width:80%;
    }
    .cont{
        margin:100px auto;
        width:540px;
        height:708px;
        background-color: rgba(0,0,0,0.8);
        box-shadow: 0px 0px 20px rgba(0,0,0,0.8);
        animation-duration: 1.5s;
        animation-fill-mode: both;
        animation-name: fadeInDown;
    }
    .cont div{
        overflow: hidden;
        float:left;
        
    }
    .cont div img{
        display: block;
    }
    .lang{
        text-align:center;
        animation-delay:1s;
        animation-duration: 1s;
        animation-fill-mode: both;
        animation-name: fadeInDown;
    }
    .lang a{
        display: inline-block;
        margin:0px 40px;
    }
    .lang img{
        animation-name: fadeInDown;
    }

    @keyframes fadeInDown{
        0% {
            opacity: 0;
            transform: translate3d(0, 100%, 0);
        }
        100% {
            opacity: 1;
            transform: none;
        }
    }
}