.first .last{height:0;line-height:0;overflow:hidden;}

.main{height:720px;box-sizing:border-box; color:#fff;text-align:center;justify-content:space-between;}
.main h1{font-size:48px; line-height:120%;opacity:0;}
.main h3{font-size:20px;line-height:120%;margin-top:10px;opacity:0;}
.tool{height:600px;padding:0px 7%;justify-content:space-between;}
.tool .title{text-align:center;}
.tool .title img{width:55%;}
.tool .code{border-radius:5px;overflow:hidden;}
.tool .code img{width:100%; border-radius:5px;}
.main .txt{margin-top:15%;}
.main .tip{margin-bottom:8%;}
.main .tip b{font-size:14px;}
.main .tip img{width:40px;}

.product{height:600px;}
.product .item{
    height:25%;background:no-repeat center center;background-size:auto 100%;
    justify-content:center;color:#fff;padding:0 7%;
    font-size:14px;
}
.product .item h2{font-size:28px;}
.product .item div{line-height:150%;margin-top:5px;width:50%;}
.about .img img{width:100%;}
.about .content{padding:7% 7%;flex-grow:2;justify-content:space-between;}
.about .content .c{flex-grow:2; padding-top:10%;text-align:justify;color:#606060;}
.about .title img{width:55%;}
#home .news{
    display:-webkit-flex; display:flex;
    flex-flow:column nowrap;
    justify-content:space-between;
    background:#ebedf0;
    padding:0px 7%;height:620px; color:#000;
}

.news .item{border-radius:5px;background:#fff;}
.news img{width:100%;border-radius:5px;}
.news .title{font-size:18px;padding:10px 0;}
.news .des{font-size:15px;line-height:150%;color:#606060;}
.news .other{padding:15px 0; justify-content:space-between;}
.news .newsList .other{padding-top:0;}
.news .from{text-align:right;}
.news .newsItem{padding:0 5%;}
#home .know{
    display:-webkit-flex; display:flex;
    flex-flow:column nowrap;
    justify-content:space-between;
    background:#ebedf0;
    padding:0px 7%;
    height:620px;
    color:#0d69cd;
}
.know h2{font-size:15px;margin-bottom:8px;font-weight:bold;}
.know .img{border-radius:5px;overflow:hidden;}
.know .img img{width:100%;border-radius:5px;}
.know .title img{width:55%;border-radius:5px;}