body { font-size: 14px; line-height: 1.5; color: #a2b3b9; background-color: #F2F2F2; }
.wrap { max-width: 750px; margin: 0 auto; overflow: hidden; position: relative; padding-bottom: .3rem; }






.help-center{ background-color: #fff}
.help-center h1{ padding: .3rem .15rem .15rem; font-size: .18rem; line-height: .25rem; color: #49C9F5;}
.help-center .cont-box{ padding: 0 .15rem; font-size: .15rem; line-height: .21rem;}
.help-center .cont-box p{ margin-top: .05rem;}
.help-center .cont-box img{ max-width: 100%; vertical-align: top; margin: .05rem 0;}
.help-center .help-nav{ padding-left: .15rem; border-bottom: 1px solid #ecf0f1; border-top: 1px solid #ecf0f1; margin-top: .3rem;}
.help-center .help-nav li{ line-height: .44rem; font-size: .17rem; color: #49C9F5; border-bottom: 1px solid #ecf0f1; position: relative;}
.help-center .help-nav li a{ color: #49C9F5; display: block;}
.help-center .help-nav li:last-child{ border-bottom: 0}
.help-center .help-nav li:after{ content: ""; position: absolute; right: .15rem; top: .15rem; width: .06rem; height: .06rem; border: 3px solid #ecf0f1; border-bottom: 0; border-right: 0; transform: rotate(135deg); -webkit-transform: rotate(135deg); }