.content_wrap h2 ,h4{
  font-size: 24px;
  padding: 25px;
  background-color: #f5f6f7;
  border-radius: 2px;
  line-height: 1.25;
  font-weight: bold;
}

.content_wrap p{
  margin-bottom: 1.8em;
}
body {
  font-family: "Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,sans-seri;
  font-size: 18px;
  color: #333;
  line-height: 1.8;
  margin: 0;
  overflow-wrap: break-word;
  background-color: #f4f5f7;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  background-attachment: fixed;
}