@charset "UTF-8";

html{
  margin: 0;
  padding: 0;
  font-family: 'Hiragino Kaku Gothic ProN', 'ヒラギノ角ゴ ProN W3', Meiryo, メイリオ, Osaka, 'MS PGothic', arial, helvetica, sans-serif;
  background-color: #f9f9f9;
}
body{
  margin: 0 auto;
  padding: 20px;
  width: 1300px;
  background-color: #ffffff;
}

h2 {
  position: relative;
  padding: 1.5rem 1rem;
}

h2:after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 10px;
  content: '';
  background-image: -webkit-repeating-linear-gradient(135deg, #000, #000 1px, transparent 2px, transparent 5px);
  background-image: repeating-linear-gradient(-45deg, #000, #000 1px, transparent 2px, transparent 5px);
  background-size: 7px 7px;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

h5 {
  position: relative;
  padding: 1.5rem 2rem;
  border: 3px solid #d8d8d8;
  border-radius: 10px;
  background: #f9f9f9;
}

h5:before {
  position: absolute;
  bottom: -14px;
  left: 1em;
  width: 0;
  height: 0;
  content: '';
  border-width: 14px 12px 0 12px;
  border-style: solid;
  border-color: #d8d8d8 transparent transparent transparent;
}

h5:after {
  position: absolute;
  bottom: -10px;
  left: 1em;
  width: 0;
  height: 0;
  content: '';
  border-width: 14px 12px 0 12px;
  border-style: solid;
  border-color: #f9f9f9 transparent transparent transparent;
}