discourse/app/assets/stylesheets/common/base/crawler_layout.scss

body.crawler {
  > header {
    width: 100%;
    position: absolute;
    top: 0;
    z-index: z("max");
    background-color: #fff;
    padding: 10px;
    box-shadow: shadow("header");
  }
  div.topic-list div[itemprop='itemListElement'] {
    padding: 10px 0;
    border-bottom: 1px solid #e9e9e9;
    .page-links a {
      padding: 0 4px;
    }
  }
  div#main-outlet {
    div.post {
      img {
        max-width: 100%;
      }
    }
  }
  footer nav {
    margin: 50px 0;
    a {
      padding: 15px;
    }
  }
}