html {
  font-size: 10px;
}
@media (min-width: 768px) {
  html {
    font-size: 11px;
  }
}

.container {
  max-width: 960px;
}

.pricing-header {
  max-width: 700px;
}

.card-deck .card {
  min-width: 220px;
}

.card img {
  width: 250px;
  height: 80px;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
}