.main-contents{
  padding: 100px 0 40px;
}

.message-block{
  background-color: #fff;
  padding: 20px;
}

.message-block__txt{
  font-size: 13px;
}

.message-block a{
  color:#f28003;
  text-decoration:underline;
}

@media screen and (min-width: 768px) {
  .message-block {
    width: 900px;
    margin: 0 auto;
    padding: 40px;
    font-size: 0;
  }

  .message-block__txt {
    font-size: 13px;
  }

  .message-block a:hover{
    text-decoration:none;
  }
}