.article-block {
  max-width: 760px;
  margin: 0 auto 40px;
  padding: 0 16px;
}

.article-block h1,
.article-block h2,
.article-block h3 {
  line-height: 1.2;
  margin: 0 0 16px;
}

@media (max-width: 767px) {
  .article-block h1 {
    font-size: 24px;
  }
  .article-block h2 {
    font-size: 20px;
  }
}