body {
  max-width: 800px;
  margin: auto;
  padding: 1em;
  line-height: 1.5;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

/* Navigation */
.menu { 
  padding: 0;
  text-align: center;
}
.menu li { 
  display: inline-block; 
}
.menu a {
  text-decoration: none;
  background: #f6f8fa;
  padding: 8px 12px;
  border-radius: 6px;
  margin: 0 5px;
  color: #0366d6;
}
.menu a:hover {
  background: #e1e4e8;
  transition: background 0.2s ease;
}

/* Horizontal rules */
hr {
  border-style: dashed;
  color: #ddd;
}

/* Footer */
footer { 
  text-align: center;
  margin-top: 2em;
  padding-top: 1em;
}
footer a { 
  text-decoration: none;
}

/* Content */
h1, h2, h3 {
  color: #24292e;
}
a { 
  color: #0366d6;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* Tables */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1em 0;
}
th, td {
  padding: 8px;
  text-align: left;
  border-bottom: 1px solid #dfe2e5;
}
th {
  background-color: #f6f8fa;
}

/* Code blocks */
pre {
  background: #f6f8fa;
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
}
code {
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 85%;
}