body{
    font-family: "Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",Arial,sans-serif;
    background-color: #ffffff;
}
.wrap{
    overflow: inherit;
}
.pull-left{
    float: left;
}
.pull-right{
    float: right;
}
.content-wrap{
    width: 1200px;
    margin: 0 auto;
    padding: 60px 0;
}
.content-wrap *{
    box-sizing: border-box;
}
.wrapper *{
    box-sizing: border-box;
}

.content-wrap .main-title{
    font-size: 30px;
    color: #000000;
    text-align: center;
}

#banner-img{
    height: 300px;
    width: 100%;
    min-width: 1200px;
    background: url(../images/banner.jpg) center center no-repeat;
}
#banner-img .banner-info{
    padding-top: 90px;
    width: 1200px;
    margin: 0 auto;
}
#banner-img .banner-info h1{
    font-size: 25px;
    color: #ffffff;
    margin-bottom: 20px;
}
#banner-img .banner-info p{
    color: #ffffff;
    font-size: 16px;
    line-height: 29px;
}

#ivp6-introduce {
    background-color: #f9faff;
    position: relative;
    padding-bottom: 145px;
}
#ivp6-introduce .introduce-detail{
    margin-top: 56px;
    padding-left: 80px;
}

#ivp6-introduce .introduce-detail p{
    font-size: 17px;
    line-height: 37px;
    color: #000000;
}

#ivp6-introduce .introduce-detail p.sentence{
    text-indent:2em;
}

#ivp6-introduce .introduce-detail p.item::before{
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    vertical-align: middle;
    border-radius: 100%;
    background-color: #2d7af2;
    margin-right: 30px;
}

#ivp6-introduce .introduce-detail p a{
    color: #2d7af2;
    font-style: italic;
    text-decoration: underline;
}

#ivp6-introduce .introduce-detail .ivp6test-web{
    width: 995px;
    display: block;
    text-align: center;
    margin-top: 28px;
    padding-bottom: 23px;
}

#ivp6-introduce::after{
    content: "";
    display: block;
    width: 1340px;
    height: 596px;
    position: absolute;
    margin: 0 auto;
    left: 0;
    right: 0;
    bottom: 0;
    background: url(../images/introduce-bottom.png) center center no-repeat;
}

#ipv6-version{
    background-color: #ffffff;
    padding-bottom: 72px;
}

#ipv6-version ul.version-detail{
    margin-top: 60px;
    padding: 0 105px 0 50px;
}
.pull-left{
    float: left;
}
.pull-right{
    float: right;
}

#ipv6-version ul.version-detail li.item:first-of-type{
    margin-bottom: 60px;
}

#ipv6-version ul.version-detail .item-info{
    width: 438px;
    padding-left: 68px;
    position: relative;
    margin-top: 53px;
}
#ipv6-version ul.version-detail li.item:first-of-type .item-info{
    margin-top: 128px;
}

#ipv6-version ul.version-detail .item-info::before{
    position: absolute;
    content: "";
    width: 152px;
    height: 57px;
    display: block;
    top:-36px;
    left: 0;
    background: url(../images/IPV6.png) center center no-repeat;
}
#ipv6-version ul.version-detail .item-info .item-title{
    font-size: 28px;
    color: #000000;
    position: relative;
    margin-bottom: 30px;
}

#ipv6-version ul.version-detail .item-info p{
    font-size: 16px;
    line-height: 28px;
    color: #666666;
}

#ipv6-version ul.version-detail .item-info em{
    font-size: 14px;
    color: #ff0000;
}
.go-buy{
    display: block;
    height: 50px;
    background-color: #ff8133;
    border-radius: 42px;
    color: #ffffff;
    font-size: 13px;
    text-align: center;
    line-height: 50px;
    padding: 0 23px;
    width: 187px;
}
.go-buy:hover{
    background-color: #fd8c45;
    color: #ffffff;
}
#ipv6-version ul.version-detail .item-info .go-buy{
    margin-top: 20px;
}

#ipv6-advantage{
    background-color: #f9faff;
}

#ipv6-advantage .advantage-detial{
    margin-top: 56px;
    display: flex;
    justify-content: space-between;
    padding: 0 65px;
    position: relative;
}
#ipv6-advantage .advantage-detial::before{
    content: "";
    width: 190px;
    height: 154px;
    display: block;
    position: absolute;
    top: -73px;
    left: -56px;
    background: url(../images/advantagebg-icon1.png) center center no-repeat;

}
#ipv6-advantage .advantage-detial::after{
    content: "";
    width: 146px;
    height: 149px;
    display: block;
    position: absolute;
    bottom: -66px;
    right: 0;
    background: url(../images/advantagebg-icon2.png) center center no-repeat;

}
#ipv6-advantage .advantage-detial li.item{
    width: 290px;
    height: 223px;
    background-color: #ffffff;
    padding-top: 34px;
    text-align: center;
    position: relative;
    border-radius: 9px;
    display: inline-block;
    margin-right: 96px;
    z-index: 2;
    box-shadow: 0 0 6px 0 rgba(0,0,0,.1);
}

#ipv6-advantage .advantage-detial li.item:last-of-type{
    margin-right: 0px;
}
#ipv6-advantage .advantage-detial li.item i{
    height: 63px;
    display: block;
}
#ipv6-advantage .advantage-detial li.item .item-title{
    color: #000000;
    font-size: 22px;
    margin-bottom: 20px;
    margin-top: 18px;
}

#ipv6-advantage .advantage-detial li.item p{
    font-size: 16px;
    color: #888888;
}

#ipv6-advantage .go-buy{
    margin: 0 auto;
    margin-top: 80px;
}