body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.5em;
  font-size: 1.1em;
  color: #fafafa;
  max-width: 40rem;
  padding: 2rem;
  margin: auto;
  background: #222; 
  overscroll-behavior-y: none;
}
img {max-width: 100%;}
a {color: #0074D9;}
h1 {font-size: 1.6em;}
h2 {font-size: 1.2em;}
h3 {font-size: 1.1em;}
.muted {
  color: #aaa;
  text-decoration: none;
}
.small {font-size: .8em;}
hr {
  border: 0px;
  border: 1px solid #eee;
}
code {
  display: inline-block;
  background-color: #000000;
  color: #ffffff;
}