body {
  font-family: 'Ubuntu', sans-serif;
  font-size: 18px;
  line-height: 1.6;
  background: #fafafa;
  color: #333;
  margin: 40px;
}

h1 {
  font-size: 28px;
  margin-bottom: 0.3em;
}

.summary {
  padding: 15px;
  border-radius: 6px;
  margin-bottom: 30px;
}

.group {
  margin-bottom: 30px;
  padding: 15px;
  background: #e9e9e9;
}

.group h2 {
  font-size: 22px;
  margin-bottom: 10px;
  border-bottom: 1px solid #ccc;
  padding-bottom: 4px;
}

.sample {
  margin: 6px 0;
}

.label {
  display: inline-block;
  width: 160px;
  font-weight: bold;
  color: #555;
}