body div.text_item {
  box-sizing: border-box;
  width: calc(50% - 32px);
}
@media (max-width: 960px) {
  body div.text_under h2 {
    font-size: 30px;
  }
  body div.text_under {
    font-size: 16px;
  }
}
@media (max-width: 780px) {
  body div.text_under h2 {
    font-size: 25px;
  }
  body div.text_under {
    font-size: 15px;
  }
  body div.text_item {
    margin-left: 0;
    margin-right: 0;
    width: 100%;
    padding: 20px;
  }
}
@media (max-width: 480px) {
  body div.text_under h2 {
    font-size: 22px;
  }
}