style.css

* {
  box-sizing: border-box;
  font-family: 'Lato', sans-serif;
}

html,
body {
  margin: 0;
  padding: 0;
}

/* Reset the user-agent by setting these to 0 */
h1, h2 {
  margin: 0;
}

.max-width-wrapper {
  max-width: 800px;
  margin: 0 auto;
  /* This helps on smaller screens / mobile */
  padding: 0 24px;
}

.intro-chunk {
  padding: 96px 0;
  /* Max-width at the wrapper level keeps the overall box the correct size. Here, we're creating a sort of column for the content to live */
  max-width: 400px;
}

.intro-chunk p {
  font-size: 1.25rem;
}

.intro-chunk .title {
  font-size: 2rem;
  margin-bottom: 32px;
}

.intro-chunk strong {
  color: hsl(160deg, 100%, 30%);
}

header {
  border-bottom: 8px solid hsl(0deg, 0%, 40%);
}

main {
  background-color: hsl(0deg, 0%, 60%);
  padding: 96px 0;
}

.card {
  background-color: hsl(0deg, 0%, 100%);
  padding: 24px;
  /* If we didn't use negative margin here, the padding would offset the text from the nice line we have through the page */
  /* Negative margin of the same value as padding allows us to eat into the margin in the max-width-wrapper */
  margin: -24px;
  border-bottom: 8px solid hsl(0deg, 0%, 40%);
}

.card p {
  font-size: 1.25rem;
  line-height: 1.4;
}

.card p:last-child {
  margin-bottom: 0;
}

.indented-heading {
  background-color: hsl(45deg, 100%, 50%);
  margin-left: -32px;
  /* Could also set .card padding-top, but using margin-top here is more specific. So here, we eat into the padding by 16, leaving 8 */
  margin-top: -16px;
  padding: 16px 32px;
  /* Using fit-content shrinks the box to fit the content (min-content will break the lines and max-content will spill too far) */
  width: fit-content;
  border-bottom: 8px solid hsl(45deg, 100%, 40%);
}