CSS base framework

base.css

:root {
  font-family: var(--default-font-family);
  /* font-size: 1.125rem; */
  font-size: calc(1rem + 0.333vw);
}

html, body {
  height: 100%;
  width: 100%;
}

body {
  color: var(--color-gray-900);
  font-weight: var(--font-weight);
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 1.75rem;
}

h3 {
  font-size: 1.5rem;
}

h1, h2, h3 {
  line-height: 1.3;
}

p {
  line-height: var(--text-line-height);
}

h1, h2, h3, p {
  margin: auto;
  max-width: var(--max-block-width);
}

h1, h2, h3, strong {
  font-weight: var(--font-weight-strong);
}

h1 + p {
  margin-top: 3rem;
}

p + p, h2 + p, h3 + p {
  margin-top: 1.5rem;
}

* + section {
  margin-top: 6rem;
}

/* 
  SPECIALITY
*/

header hgroup h1 + h2 {
  font-weight: var(--font-weight);
  margin-top: 1rem;
}

/* 
  RESPONSIVITY 
*/

@media only screen and (max-width: 1200px) {
  h1, h2, h3, p {
    padding: 0 1rem;
  }
}

@media only screen and (min-width: 600px) {
  /* :root {
    font-size: 1.3rem;
  } */

  * + section {
    margin-top: 9rem;
  }
}

@media only screen and (min-width: 1800px) {
  /* :root {
    font-size: 1.5rem;
  } */
}