github-dark-element-borders.user.css

/* ==UserStyle==
@name         GitHub Dark Border Elements
@namespace    StylishThemes
@version      2.0.12
@description  GitHub Dark opinionated borders removal on various elements
@author       StylishThemes and contributors
@homepageURL  https://github.com/StylishThemes/Feature-Override-Styles/
@supportURL   https://github.com/StylishThemes/Feature-Override-Styles/issues/new/choose
@updateURL    https://raw.githubusercontent.com/StylishThemes/Feature-Override-Styles/master/github-dark-element-borders.user.css
@license      MIT

@var checkbox enableBorders "Enable borders" 1

@preprocessor stylus
==/UserStyle== */
@-moz-document regexp("^https?://((gist|guides|help|lab|launch-editor|raw|resources|status|developer)\\.)?github\\.com/((?!generated_pages/preview).)*$"),
               domain("githubusercontent.com"), domain("graphql-explorer.githubapp.com"),
               domain("www.githubstatus.com") {

  /* hack to show style in popup when checkbox is disabled */
  stylus-fix { content: "true"; }
  /* stylelint-disable */
  i = !important
  /* stylelint-enable */

  if ( enableBorders == 0 ) {
    html body .markdown-body code,
    html body .merge-pr-more-commits,
    html body .commit-ref,
    html body .commit-link tt,
    html body .markdown-body pre {
      border: 0 i;
    }
  }
}