#app{font-family:Avenir,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{padding:0;margin:0}body{min-width:1024px;color:#000;background:#f8f8f8}.header{height:75px}.logo-img{display:block;width:50px;height:50px}.logo-box{margin-left:210px;-webkit-box-align:center;-ms-flex-align:center;align-items:center;cursor:pointer}.logo-title-box{padding-left:14px}.flx{display:-webkit-box;display:-ms-flexbox;display:flex}.clearfix:after{content:" ";display:block;height:0;clear:both;visibility:hidden}.fl{float:left}.web-title{font-size:18px}.web-site{font-size:14px}.nav-box{margin:20px 0 0 40px}.nav-item{cursor:pointer;padding:0 0 10px 0;height:17px;margin-left:52px}.nav-item a{color:#000;text-decoration:none}.cur-nav-item{border-bottom:3px solid #000}.nav-img{position:relative}.nav-img img{width:100%}.free-buy{background:hsla(0,0%,100%,.1);position:absolute;left:50%;-webkit-transform:translateX(-50%);transform:translateX(-50%);bottom:40px;text-decoration:none;font-size:20px;color:#fff;border:1px solid #fff;padding:4px 28px;border-radius:20px}.free-buy,.introduce-header{font-weight:700;text-align:center}.introduce-header{font-size:28px;padding:30px 0 12px}.introduce-container{width:1018px;margin:0 auto}.introduce-list{-ms-flex-wrap:wrap;flex-wrap:wrap;-webkit-box-orient:horizontal;-webkit-box-direction:normal;-ms-flex-direction:row;flex-direction:row;-ms-flex-pack:distribute;justify-content:space-around}.func-item{position:relative;width:302px;margin:18px;justify-self:center;-webkit-box-sizing:border-box;box-sizing:border-box;padding:27px 14px 43px;background:#fff;-webkit-box-shadow:0 3px 15px 0 hsla(0,0%,84.3%,.3);box-shadow:0 3px 15px 0 hsla(0,0%,84.3%,.3);border-radius:15px}.func-icon{margin:0 auto;display:block;width:50px;height:50px}.item-title{margin-top:18px;font-weight:700;font-size:18px;padding-bottom:14px;text-align:center}.func-content{line-height:28px;font-size:14px}