open-consul/website/source/assets/stylesheets/consul-connect/components/_container.scss

.g-container {
  margin: 0 auto;
  max-width: $site-max-width;
  padding-left: 15px;
  padding-right: 15px;

  @media (max-width: 768px) {
    padding-left: 24px;
    padding-right: 24px;
  }
}