.item {
    width: 100%;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    width: 100%;
    height: 1080px;
}



.item-1 {
    background-image: url(../images/banner1.png?v=20190515);

}

.item-2 {
    background-image: url(../images/banner2.png?v=20190515);
}

.item-3 {
    background-image: url(../images/banner3.png?v=20190515);
}

.item-4 {
    background-image: url(../images/banner4.png?v=20190515);
}

.btn {
    width: 150px;
    height: 50px;
    line-height: 50px;
}

.content {
    width: 1000px;
    margin: 0 auto;
}

.tac {
    text-align: center;
}

.title {
    font-size: 36px;
    font-weight: 400;
    margin-bottom: 20px;
}

.ft-line {
    width: 60px;
    height: 6px;
    background: #D9B76F;
}

.item21 {
    position: absolute;
    bottom: 0;
}


.note {
    font-size: 16px;
    font-weight: 400;
    line-height: 32px;
    margin: 20px auto;
}

.footer {
    width: 100%;
    height: 280px;
    background: #232A39;
}

.usPhone {
    margin-left: 20px;
}

.usPhone>p:nth-child(1) {
    font-size: 26px;
    font-family: PingFangSC-Semibold;
    font-weight: 600;
    color: rgba(255, 255, 255, 1);
    line-height: 37px;
}

.usPhone>p:nth-child(2) {
    font-size: 12px;
    font-family: PingFangSC-Regular;
    font-weight: 400;
    color: rgba(102, 102, 102, 1);
}

.footer,
.footer a {
    color: #6E7689;
}

.footer-line {
    border-bottom: 1px solid #6E7689;
}

.header {
    height: 80px;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    position: fixed !important;
    top: 0;
    left: 0;
    z-index: 1000;

}


.menu {
    color: #FFFFFF;
    font-size: 16px;

}

.menu a {
    display: block;
    height: 80px;
    line-height: 80px;
    margin: 0 10px;
    padding: 0 20px;
    cursor: pointer;
    color: #fff;
}

.menu a:hover {
    background-color: #3583FB;
}