main {
  display: block;
}

main article {
  width: 70%;
  margin: 30px auto;
}

main article h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.2;
}

main article h2 {
  font-size: 26px;
  font-weight: 600;
}

main article p {
  font-size: 18px;
  line-height: 1.6;
  color: rgb(50, 50, 50);
  margin-bottom: 20px;
}

main article img {
  width: 100%;
  height: auto;
  margin-bottom: 20px;
}

main article ul {
  padding-left: 20px;
  margin-bottom: 20px;
}

main article ul li {
  font-size: 18px;
  line-height: 1.6;
  color: rgb(50, 50, 50);
}

@media screen and (max-width:650px) {
  main article {
    width: 90%;
  }

  main article h1 {
    font-size: 28px;
  }

  main article h2 {
    font-size: 24px;
  }

  main article p {
    font-size: 16px;
    line-height: 1.4;
  }

  main article ul li {
    font-size: 16px;
    line-height: 1.4;
  }
}