_layout.css

body {
  max-width: 650px;
  margin: 0 auto;
  padding: 10px;
  line-height: 1.4;
  font-size: 18px;
  font-family: sans-serif;
  color: #334;
}

footer {
  padding: 1rem 0;
  border-top: solid 2px #ccc;
}

img {
  display: block;
  max-width: 100%;
  margin: 1em auto;
}

a {
  text-decoration: none;
  color: #0070ff;
}

a:hover {
  text-decoration: underline;
}

ul {
  list-style-type: '›';
  padding-left: 0.4rem;
}

li {
  margin: 0.5em 0;
  padding-left: 0.7rem;
}

li::marker {
  font-weight: bold;
}

code {
  white-space: pre;
  display: block;
  overflow-x: auto;
  padding: 0.5em;
  margin: 0.5em 0;
  border: solid 1px #ccc;
}

hr {
  border: solid 1px #ccc;
  margin: 1rem 0;
}

table {
  border-collapse: collapse;
  margin: 1.5rem 0;
  word-break: break-word;
}

td, th {
  border: 1px solid #ccc;
  text-align: start;
  padding: 0.5rem;
}

th {
  background-color: #eee;
  font-weight: bold;
}