.intro_content .border_box {
  padding: 30px 50px 30px;
  margin-top: 40px;
}
@media only screen and (max-width: 568px) {
  .ttl_underbar_set .main_txt::before {
    content: none;
  }
  .intro_content .border_box {
    padding: 16px 18px 18px;
    margin-top: 25px;
  }
}