* {
    padding: 0;
    margin: 0;
}

.content {
    width: 1210px;
    margin: 0 auto;

}

.flex {
    display: flex;
}

.flex-1 {
    flex: 1 1 0%;
}

.text-right {
    text-align: right;
}

.text-center {
    text-align: center;
}

.nav a {
    display: inline-block;
    height: 50px;
    width: 110px;
    margin: 10px 0;
    line-height: 50px;
    text-align: center;
    color: #666666;
    font-size: 16px;
    text-decoration: none;
}

.nav a.active {
    font-size: 18px;
    color: #ae6d29;
    background: url('../img/bg_nav.png') no-repeat center bottom
}

.main {
    width: 100%;
    background: url('../img/bg_main.jpg') repeat;
}

.banner {
    width: 100%;
}

.banner img {
    width: 100%;
}

.ptzy_box {
    background: url('../img/bg_ptzy.png') no-repeat ;
    background-size: 100% 100%;
    width: 100%;
    height: 560px;
    margin-top: 110px;
}

.ptzy_box .item-shape {
    width: 124px;
    margin: 0 auto;
}

.ptzy_box .item-shape .top-box {
    width: 124px;
    height: 124px;
    border: 2px solid #ae6d29;
    border-radius: 50%;
}

.ptzy_box .item-shape .top-box .con {
    width: 110px;
    height: 110px;
    margin: 7px;
    background: #ae6d29;
    border-radius: 50%;
    color: #ffffff;
    font-size: 60px;
    text-align: center;
    line-height: 110px;
}

.ptzy_box .item-shape .line {
    width: 2px;
    height: 100px;
    background-color: #ae6d29;
    margin: 0 auto;
}

.ptzy_box .item-shape .jiantou {
    width: 0;
    height: 0;
    border: 10px solid transparent;
    border-top-color: #ae6d29;
    margin: 0 auto;
}

.ptzy_box .item-text {
    text-align: center;
    color: #ae6d29;
    font-size: 20px;
    font-weight: bold;
}

.ptzy_box .item-shape.tow {
    opacity: 0.7;
    padding-top: 30px;
}