#sample-01 {
  overflow: auto;
  width: 300px;
  height: 300px;
  border: 1px solid #ccc;
  margin: 5px auto;
}

#sample-01-contents {
  width: 900px;
  height: 600px;
  border: 5px solid #0d4993;
}

#sample-01-contents img {
  /* for zoom */
  width: 100%;
  height: 100%;
}

#sample-01-device {
  font-weight: bold;
}

@media only screen and (min-width: 768px) {
  #sample-01 {
    float: left;
    margin: 0 5px 5px 0;
  }
  #sample-01-description {
    clear: both;
  }
}