html, body {
  margin: 0;
  padding: 0;
  font-size: 14px;
}
.bg-gray {
  background: #dedede;
}
h1, h2 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}
h3 {
  font-size: 1.25rem;
}