* {
  box-sizing: border-box;
}
html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: 2rem;
  line-height: 2rem;
  margin-bottom: 2rem;
}
@media (min-width: 320px) {
  body {
    padding: 2em;
  }
}