@page { size: A4 }

body {
  background: #f0f0f0;
}

.sheet {
  font-family: 'Hiragino Sans', 'Meiryo', sans-serif;
  color: #333;
  line-height: 1.4;
}

h1 {
  font-size: 1.6em;
  color: #2c3e50;
  border-bottom: 3px solid #2c3e50;
  padding-bottom: 0.1em;
}

h2 {
  font-size: 1.2em;
  color: #34495e;
  border-left: 4px solid #3498db;
  padding-left: 0.6em;
  margin-top: 1.2em;
}