html {
  background-color: #f0f0f0;
  font-size: 18px;
  height: 100vh;
  -webkit-text-size-adjust: 100%;
}

body {
  align-items: center;
  display: flex;
  font-size: 1rem;
  justify-content: center;
  line-height: 1.5;
  margin: 0;
  padding: 1rem;
}

@media (min-width: 768px) {
  body {
    height: calc(100vh - 2rem);
  }
}

.sr-only {
  border: 0;
  clip: rect(0, 0, 0, 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.rack-card {
  display: block;
  height: 630px;
  width: 280px;
}

@media (min-width: 414px) {
  .rack-card {
    height: 855px;
    width: 380px;
  }
}

@media (min-width: 768px) {
  .rack-card {
    display: none;
  }
}

.letterhead {
  border: 2px solid #000000;
  display: none;
  height: auto;
  max-height: 100%;
  max-width: 100%;
  width: auto;
}

@media (min-width: 768px) {
  .letterhead {
    display: block;
  }
}