openproject/app/assets/stylesheets/content/editor/_markdown.sass

// Specific styles for displaying rendered markdown on all pages
// This is still selected by div.wiki since this is still used throughout the app.

div.wiki

  // Style pre tags alone
  pre
    margin: 1em 1em 1em 1.6em
    padding: 2px 2px 2px 0
    background-color: #fafafa
    border: 1px solid #dadada
    width: auto
    overflow-x: auto
    overflow-y: hidden

  // Avoid doubling borders in pre > code
  pre > code
    display: block
    border: none
    background: transparent
    color: initial