html, body{
    height: 100%;
}

.bg{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -100;
}
.app-head {
    width: 790px;
    height: 104px;
    text-align: center;
    position: relative;
    left: 0;
    right: 0;
    top: 10px;
    margin: 0 auto;
}
.app-foot {
    width: 800px;
    height: 30px;
    position: absolute;
    left: 50%;
    margin-left: -400px;
    bottom: 20px;
    text-align: center;
    color: #333;
    font-size: 14px;
    z-index: 10;
}

.logo {
    width: 104px;
    height:104px;
    float: left;
}

.title {
    width: 652px;
    height: 78px;
    float: left;
    margin: 13px 15px;
}
.swiper-container {
    width: 1200px;
    height: 475px;
    padding-top: 35px;
    padding-bottom: 50px;
}
.swiper-slide {
    width: 250px;
    height: 546px;
    text-align: center;
}
.swiper-prev{
    width: 54px;
    height: 107px;
    position: absolute;
    left: 0;
    top:50%;
    z-index: 10;
    margin-top: -50px;
    cursor: pointer;
}
.swiper-next{
    width: 54px;
    height: 107px;
    position: absolute;
    right: 0;
    top:50%;
    z-index: 10;
    margin-top: -50px;
    cursor: pointer;
}

.root{
    position: relative;
    height: 100%;
    background: #f4f4fc url(/uploads/image/zsi/background2.jpg) no-repeat;
    background-size: cover;
}

@media (max-width: 1440px) {
    .app-head{
        top: 40px;
    }
    .app-content{
        margin-top: 105px;
    }
}

@media (min-width: 1440px) {
    .app-head{
        top: 86px;
    }
    .app-content{
        margin-top: 160px;
    }
}