h2#danraku2 {
 padding: .5em .75em;
  background-color: #f6f6f6;
  border-left: 6px solid #ccc;
}

h3#danraku3{
  padding: .5em .75em;
  border: 1px solid #ccc;
}

h4#danraku4{
  padding: .5em .75em;
  background-color: #f6f6f6;
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
}