body {
  margin: 2rem auto 0;
  padding: 0;
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
  max-width: 1200px;
  display: -ms-grid;
  display: grid;
  -ms-grid-columns: 1fr 1fr;
      grid-template-columns: 1fr 1fr;
  -webkit-column-gap: 1rem;
          column-gap: 1rem;
}

body section {
  border: 1px solid violet;
  padding: 2rem;
  text-align: center;
  border-radius: 6px;
}

body section h2 {
  font-size: 3em;
  color: violet;
}

body section h3 {
  font-size: 2em;
}

body section button {
  border: 1px solid #00b8d4;
  background: #18ffff;
  border-radius: 6px;
  padding: 1rem 2rem;
  font-weight: bold;
  font-size: 1.5em;
  cursor: pointer;
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
}

body section button:hover {
  background: #00b8d4;
  color: #fff;
}

body section h4 {
  margin: 30px auto 10px;
}

body section xmp {
  margin: 0;
  border: 1px solid #ddd;
  text-align: left;
  padding: 1rem;
  border-radius: 6px;
}

body section:first-child {
  border: 1px solid #00b8d4;
}

body section:first-child h2 {
  color: #00b0ff;
}