*{
    margin: 0;
    padding: 0;
}
#app{
    overflow: hidden;
    margin: 0;
    padding: 0;
    padding: 0;
}
#page{
    background-color: #343434;
    margin: 0;
    padding: 10px;
}
#page .nav{
    color: #ffffff;
    display: flex;
    justify-content: space-between;
}
#page .nav p{
    padding: 0;
    margin: 0;
}
#page img{
    width: 50px;
    height: 50px;
}
.page1{
    position: relative;
    margin: 0;
    padding: 0;
    width: 100%;
    height: 668px;
    background: url('../image/bg.png') no-repeat  center center;
}
.page1 .logo img{
    width: 200px;
}
.page2{
    position: relative;
    top: 0px;
    margin: 0;
    padding: 0;
    width: 100%;
    margin: 0;
    background: url('../image/bg2.png') no-repeat top center;
    
}
.page1_content .down{
    text-align: center;
    font-size: 24px;
    margin-top: 400px;
}
.page1_content .down a {
    position: relative;
    display: inline-block;
}
.page1_content .down a img{
    margin: 10px;
}


.title{
    text-align: center;
    margin: 40px 0;
    color: #343434;
}
.caption{
    width: 680px;
}
.caption h2{
    font-size: 40px;
    margin: 40px 0;
    color: #333333;
    font-weight: bold;
}
.bottom .box{
    display: flex;
    margin-top: 100px;
    justify-content: space-between;
}

.bottom .box div{
    text-align: center;
    padding: 0;
    height: 300px;
    margin-right: 15px;
    padding-top: 40px;
    background:rgba(255,255,255,.6);
}
.bottom .box div img{
    width: 80px;
    height: 80px;
}
.page3{
    position: relative;
    top: -10px;
    width: 100%;
    height: 250px;
    color: #ffffff;
    background-color: #393B40;
    text-align: center;
    margin: 0;
}
@media (max-width:991px){

    .page1 .logo img{
        width: 150px;
    }
    .title img{
        width: 700px;
    }
    .caption{
        width: 600px;
    }
}
@media (max-width: 767px){

    .page1 .logo img{
        width: 150px;
    }
    .title img{
        width: 330px;
    }
    .bottom .box{
        display: block;
    }
    .bottom .box div{
        margin: 0;
    }
    .caption{
        width: 350px;
    }
}