.ttl_plan_detail img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: auto;
}

.sec_plan {
  padding: 0 15px;
}

@media only screen and (min-width: 375px), print {
  .sec_plan {
    padding: 0 20px;
  }
}

@media only screen and (min-width: 768px), print {
  .sec_plan {
    padding: 0;
  }
}