@media screen and (min-width:640px) {

    * {
        font-size: 16px;
    }
    h3{
        font-size: 22px;
    }
    .header_nav .header_nav_title{
        line-height: 50px;
    }
    .body_center{
        width: 80%;
    }
    .body{
        padding: .35rem;
    }


    /* 底部 */
    .footer_bt{
        height:60px;
    }
    .footer_bt>div{
        height: 60px;
        padding: 0 100px;
        line-height: 100px;
    }
    .footer_bt>div a{
        font-size: 14px;color: #fff;
    }





    .article_list,.unit_list{
        width: 90%;
        margin: 10px auto;
	    padding: 5px 10px;
        border-radius: 5px;

    }
    .article_list_title{
        font-size: 16px;
        line-height: 2;
    }

    .cases_list a{
        width: 240px;
        margin: 10px;
        padding: 15px;
    }
    .cases_list a h3{
        font-size: 16px;
    }
    .cases_list a p{
        font-size: 14px;
    }

    .cases_list a .cases_list_img{
        width: 60px;height: 60px;margin-right: 10px;
    }








    .login_logo {
        height: 100px;
    }
    .login_div{
        border-radius:5px;
    }
    .login_div input {
        font-size: 14px;
        line-height: 40px;
        background-color: transparent;
        width: 400px;
        padding: 0 30px
    }
    .login_form_a {
        width: 400px;
        font-size: 16px;
        line-height: 40px;
        margin: 20px auto;
        border-radius: 5px
    }
    .login_bt a {
        font-size: 14px;
        line-height: 40px;
    }
}