.sawa-hello,
.toyo-hello {
  width: 80%;
  margin: 0 10% 4%;
  text-align: justify;
}
@media screen and (max-width: 768px) {
  .sawa-hello,
  .toyo-hello {
    width: 98%;
    margin: 0 auto 5%;
    font-size: 1em;
    line-height: 1.7;
  }
}