.content {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
}

.top {
    width: 100%;
    height: 406px;
}

.top img {
    width: 100%;
    height: 100%;
}

.main {
    width: 100%;
    /* height: 1145px; */
    background: url(../images/背景.png) repeat center center;
    float: right;
    padding-left: 180px;
    position: relative;
}

.main .nav {
    width: 150px;
    text-align: center;
    float: left;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, .5);
    z-index: 999;
}

.main .nav a {
    display: block;
    height: 80px;
    line-height: 80px;
    font-size: 18px;
    color: #fff;
    margin: 30px 0;
}

.main .nav a:nth-child(3) {
    border-bottom: 5px solid #9D7C4E;
}

.main .nav a:hover {
    border-bottom: 5px solid #9D7C4E;
    text-decoration: none;
}

.main .text_top {
    height: 450px;
    color: #fff;
    /* margin-left: 50px; */
}

.main .text_top div:nth-child(1) {
    float: left;
    width: 470px;
    height: 480px;
}

.main .text_top div:nth-child(1) h3:nth-child(1) {
    width: 300px;
    text-align: left;
    color: #9D7C4E;
    margin-left: 110px;
}

.main .text_top div:nth-child(1) h3:nth-child(2) {
    width: 300px;
    text-align: right;
    color: #9D7C4E;
    margin-left: 110px;
}

.main .text_top div p {
    margin: 0;
    text-align: justify;
}

.main .text_top div:nth-child(2) {
    float: left;
    width: 500px;
    height: 480px;
    padding-top: 100px;
    margin-left: 10px;
}

.main .text_top div:nth-child(2) img {
    width: 542px;
    height: 270px;
}

.main .text_bottom {
    height: 290px;
    color: #fff;
}

.main .text_bottom div {
}

.main .text_bottom ul {
    color: #fff;
}

.main .text_bottom ul li {
    
    text-align: left;
    margin-bottom: 10px;
}

.main .text_bottom ul li a {
    font-size: 17px;
    color: #fff;
}

.bottom {
    width: 100%;
}

.bottom img {
    width: 100%;
    height: 100%;
}