body {
  font-family: "Helvetica Neue", Arial, sans-serif;
  background: #f9f9f9;
  color: #202122;
  margin: 0;
}
#container {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
}
#sidebar {
  width: 220px;
  background: #f6f6f6;
  border-right: 1px solid #a2a9b1;
  padding: 1em;
}
#content {
  flex: 1;
  padding: 2em;
}
h1 {
  font-size: 1.8em;
  border-bottom: 1px solid #a2a9b1;
  padding-bottom: 0.2em;
}
a {
  color: #0645ad;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}