.w {
    max-width: 1440px;
    margin: 0 auto;
}

/* .bg {
    position: absolute;
    z-index: -1;
    height: 900px;
} */

.nav {
    display: flex;
    justify-content: space-between;
}



.nav .nav-r {
    display: flex;
}



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

.lianjie {
    position: absolute;
    display: flex;
    padding: 36% 45% 0;
}

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

}