GitHub Commit Limit by stylishthemes

/* ==UserStyle==
@name         GitHub Commit Limit
@version      2.0.2
@description  Show GitHub commit message limits
@namespace    github.com/StylishThemes
@author       StylishThemes <https://github.com/StylishThemes>
@homepageURL  https://github.com/StylishThemes/GitHub-Commit-Limit
@supportURL   https://github.com/StylishThemes/GitHub-Commit-Limit/issues
@license      CC-BY-SA-4.0
@advanced     color overlimit-color "Base color" #fdd
@advanced     text font-choice "Monospace Font" "Menlo"
@preprocessor uso
==/UserStyle== */
@-moz-document domain("github.com") {
  :root {
    --overlimit-color: /*[[overlimit-color]]*/;
    --font-choice: /*[[font-choice]]*/;
  }
  /*! Github Commit Changes visual limts */
  /* See http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html */
  #commit-summary-input, #commit-description-textarea {
    font-family: var(--font-choice),
                     Consolas,
                     "Andale Mono WT",
                     "Andale Mono",
                     "Lucida Console",
                     "Lucida Sans Typewriter",
                     "DejaVu Sans Mono",
                     "Bitstream Vera Sans Mono",
                     "Liberation Mono",
                     "Nimbus Mono L",
                     Monaco,
                     "Courier New",
                     Courier,
                     monospace !important;
  }
  /* add red block after 50 characters to show suggested limit */
  #commit-summary-input, #merge_title_field {
    background-image: linear-gradient(to right, transparent 0%, transparent 51ch, var(--overlimit-color) 51ch) !important;
  }
  /* add red block after 72 characters to show suggested limit */
  #commit-description-textarea, #merge_message_field {
    background-image: linear-gradient(to right, transparent 0%, transparent 73ch, var(--overlimit-color) 73ch) !important;
  }
}