* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-size: 1rem;
}

html {
  font-family: avenir-light, sans-serif;
  font-size: 12pt;
  box-sizing: border-box;
}

body {
  overflow-y: scroll;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

div#screen {
  z-index: -1;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}

div#rem {
  z-index: -1;
  position: fixed;
  top: 0;
  left: 0;
  width: 1rem;
  height: 1rem;
}

h1 {
  font-size: 1.2rem;
  padding-top: 0.3rem;
  padding-bottom: 0.2rem;
}