body {
  font-family: "Trebuchet MS", sans-serif;
  line-height: 1.6;
  color: #111;
  max-width: 1000px;
  margin: 0 auto;
  padding: 4rem;
}

header {
  text-align: center;
  margin-bottom: 4rem;
}

h1 {
  font-size: 2.5rem;
  margin: 0;
  letter-spacing: -1px;
}

.label {
  display: block;
  font-weight: 900;
  color: #d32f2f;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 1rem;
  font-size: 1.25rem;
  border-bottom: 2px solid #d32f2f;
  padding-bottom: 0.25rem;
}

.prototype-section {
  margin-bottom: 5rem;
}

.description {
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  background-color: #f4f4f4;
  font-size: 1rem;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

.mobile-container {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.mobile-variation .mobile-container {
  margin-left: 0;
  margin-right: auto;
}