* {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  text-align: center;
  margin: 0;
  font-size: 1.25rem;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
  margin: 0 auto;
}

footer {
  margin: 0 auto;
}