.contents {
  width: 800px;
  margin: 0px auto;
}

.topimage {
  text-align: center;
}

.contactlink {
  text-align: right;
}

@media screen and(max-width: 480px) {
  img {
    border: 0;
  }
}

@media screen and(min-width: 1280px) {
  img {
    border: 1px solid red;
  }
}