.blog_main{padding:100px 0 164px}.blog_main .nav{margin-top:22px}.blog_main .nav div{position:relative;z-index:2}.blog_main .nav div::after{content:'';display:block;width:100%;height:1px;background-color:#e2e2e2;position:absolute;z-index:-1;left:0;bottom:1px}.blog_main .nav .line{width:0;height:3px;background-color:#000;transition:all 0.3s;position:absolute;left:0;bottom:0}.blog_main .nav ul{display:flex;gap:2.5%}.blog_main .nav ul a{display:block;text-align:center;transition:all 0.3s;color:#3a3a3a;font-size:20px;padding:21px 0}.blog_main .nav ul .active a{color:#000;font-weight:700}.blog_main .list{margin-top:70px}.blog_main .blog_list{display:grid;gap:44px 2.65625%;grid-template-columns:repeat(3,1fr)}.blog_main .list p.center{min-height:56px}