body {
    background-color: #DB5547;

}

.bg {
    position: absolute;
    z-index: -1;
    height: 1200px;
}


.w {
    max-width: 1400px;
    margin: 0 auto;
}

.nav {
    display: flex;
    margin: 0 auto;
}

.nav-1 {
    display: flex;
}

.nav-2 {
    display: flex;
}

.banner {
    position: relative;
    display: flex;
    width: 100%;
}

.lianjie {
    position: absolute;
    display: flex;
    padding-top: 38%;
    padding-left: 28%;
}

.lianjie img {
    max-width: 101px;
    max-height: 22px;

}