/* カスタム CSS をここに入力してください */

h2 {
  position: relative;
  padding: .25em 0 .5em .75em;
  border-left: 6px solid #3498db;
}
h2::after {
  position: absolute;
  left: 0;
  bottom: 0;
  content: '';
  width: 100%;
  height: 0;
  border-bottom: 1px solid #ccc;
}

h3 {
  position: relative;
  padding: .25em 0 .5em .75em;
  border-left: 6px solid #3498db;
}
h3::after {
  position: absolute;
  left: 0;
  bottom: 0;
  content: '';
  width: 100%;
  height: 0;
  border-bottom: 1px solid #ccc;
}