body {
  background: white;
  color: black;
  font-family: serif;
  line-height: 1.4;
  margin: 20px;
  max-width: 700px;
}

h1, h2 {
  font-family: sans-serif;
}

.css-test {
  border: 4px solid black;
  padding: 6px;
}

table {
  border-collapse: collapse;
}

th {
  text-align: left;
}