.blog_main {
  padding: 12rem 0 16rem;
}
.blog_main .head {
  max-width: 62rem;
}
.blog_main .nav {
  max-width: 100%;
}
.blog_main .nav .nav_list {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}
.blog_main .nav .nav_item {
  display: block;
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 500;
  opacity: 0.5;
  font-size: 1.8rem;
  border-bottom: 3px solid transparent;
  padding: 0.5rem 0;
}
.blog_main .nav .nav_item:hover {
  opacity: 1;
}
.blog_main .nav .nav_item.active {
  opacity: 1;
  border-bottom-color: var(--primary);
}
.blog_main .list {
  margin-top: 5rem;
}
.blog_main .list ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(35rem, 100%), 1fr));
  gap: 4rem 1.63043478%;
}
@media screen and (max-width: 768px) {
  .blog_main {
    padding: 50px 0;
  }
  .blog_main .head {
    max-width: 400px;
  }
  .blog_main .nav .nav_list {
    margin: 0 -20px;
    padding: 0 20px;
    overflow-x: auto;
    flex-wrap: nowrap;
    gap: 16px;
  }
  .blog_main .nav .nav_list::-webkit-scrollbar {
    display: none;
  }
  .blog_main .nav .nav_list .nav_item {
    font-size: 16px;
    padding: 5px 0;
    border-bottom-width: 2px;
  }
  .blog_main .list {
    margin-top: 30px;
  }
  .blog_main .list ul {
    grid-template-columns: repeat(auto-fill, minmax(min(250px, 100%), 1fr));
    gap: 30px 16px;
  }
}