.about-rule-box{background-color: #fff;}
.about-nav{text-align: center;padding: 60px 0 52px;}
.about-nav>a{padding : 0 37px;line-height: 36px;font-size: 16px;color: #2B2B2B;border-radius: 18px;border: 1px solid #1B1B1B;box-sizing: border-box;display: inline-block;margin: 0 20px;}
.about-nav>a.cur{background-color: #1B1B1B;color: #fff;}
.about-rule-content{max-width: 1200px;margin: 0 auto;padding: 0 30px 50px;}
.about-rule-content>h3{font-size: 18px;font-weight: bold;color: #2B2B2B;margin-top: 50px;line-height: 32px;}
.about-rule-content>p{font-size: 16px;color: #2B2B2B;line-height: 32px;}
.about-rule-content>p.light{color: #2B2B2B;font-weight: bold;}
.about-rule-content>p.space{margin-top: 50px;}
.about-rule-content>p.row-light{margin-bottom: 50px;}

@media screen and (max-width:1920px) {
    .about-rule-content{max-width: 1048px;}
}