.dev_content{
    height: 245px;
}
.dev_content a{
    display: inline-block;
    width: 100%;
    height: 100%;
    color: #fff;
    font-size: 28px;
    letter-spacing:3px;
    border-radius: 8px;
    padding: 90px 0px 80px 70px;
    text-align: left;
}
.dev_content li{
    height: 250px;
    float: left;
    margin-bottom: 40px;
}
.environ_r_content ul li{line-height: 30px;}

/*环境搭建*/
.environ_tit{
    position: relative
}
.environ_l{
    float: left;
    width: 300px;
    border-right: 2px solid #ccc;
    overflow-y: auto;
    overflow-x:hidden;
}
.environ_l li{padding-left: 30px;}
.file_link{
    width:160px;
    display: inline-block;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}
.environ_r{
    margin-left: 302px;
    overflow-y: auto;
    overflow-x:hidden;
    position: relative;
    font-size: 14px;
}
.environ_r h1,h2,h3,h4,h5,h6{padding: 5px 0px;}
.environ_r_top{
    position: fixed;
    top:0;
    z-index:2;
    background: #F0F0F0;
    width: 100%;
}
.environ_r_content{
    padding: 10px 20px;
    position: absolute;
    top:39px;
}
.environ_r h1{font-size: 24px;margin:8px 0px;}
.environ_r h2{font-size: 20px;line-height: 40px;}
.environ_r h3{font-size: 18px;line-height: 40px;}
.environ_r p{line-height: 30px;}
.telescopic{
    border:none;
    background: none;
    margin: 10px 0 10px 15px;
}
.telescopic i{font-size: 14px;}
.environ_bulidfile li{
    padding-left: 30px;
}
.bulidfile ul::first-child{
    padding-bottom: 30px;
}
.merge{
    cursor: pointer;
    font-size: 16px;
    padding: 2px 0px;
    display: inline-block;
    color: #333;
}
.merge i{color: #68838B;font-size: 12px;margin-right: 5px;}