iframe {
  padding: 2em;
}
div.main {font-size: 16px; }
/*その他と主な共通部分は省略*/


ul {
  list-style: none;
  perspective: 900;
  padding: 0;
  margin: 0;
}
ul li {
  position: relative;
  padding: 0;
  margin: 0;
  padding-bottom: 4px;
  padding-top: 18px;
  border-top: 1px dotted #ff6873;
}