.post-page {
  margin-top: 3rem;
}

.post-page_title {
  font-size: 2rem;
  font-weight: 600;
}

.post-page_thumbnail {
  margin-top: 2rem;
}
.post-page_thumbnail img {
  width: 100%;
}

.post-page_default-header {
  margin-bottom: 3rem;
}

.post-page_header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid rgba(0, 0, 0, 0.12);
  padding-bottom: 2rem;
}
.post-page_header_left {
  padding: 0 2rem;
}
.post-page_header_left img {
  width: 100%;
}
.post-page_header_right {
  display: flex;
  justify-content: center;
  align-items: center;
}
.post-page_header_info {
  width: 500px;
  font-weight: 500;
  text-align: center;
}
.post-page_header_title {
  font-size: 2.5rem;
  font-weight: 500;
  margin: 2rem 0;
}
.post-page_header_author, .post-page_header_category {
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0.7;
}
.post-page_header_date {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  opacity: 0.7;
}

.post-page_header--horizontal {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.post-page_header--horizontal .post-page_header_left {
  order: 2;
}

@media screen and (max-width: 768px) {
  .post-page_header {
    margin: 0 auto;
    width: 90%;
    grid-template-columns: 1fr;
    grid-gap: 2rem;
  }
  .post-page_header_left {
    padding: 0;
  }
  .post-page_header_right {
    padding: 2rem 0;
    grid-row: 1/1;
  }
  .post-page_header_info {
    width: 100%;
  }
  .post-page_header--horizontal {
    gap: 1rem;
  }
}