From c8a4d9dd745e0529e8868aef4551dc2a493745a3 Mon Sep 17 00:00:00 2001
From: Andrew <browner12@gmail.com>
Date: Tue, 24 Jul 2018 19:23:17 -0500
Subject: [PATCH] add 'lighter' and 'bolder' font weight classes (#26580)

* add 'lighter' and 'bolder' font weight classes

these are 2 special values for font weight, that will give their content a font-weight value of 100 more or less than their inherited font-weight.

probably doesn't fully fulfill this issue, https://github.com/twbs/bootstrap/issues/23969, but it's a start

* Update .stylelintrc

* add 'lighter' and 'bolder' variables per @mdo 's request.
---
 .stylelintrc              |  5 ++++-
 scss/_variables.scss      |  2 ++
 scss/utilities/_text.scss | 10 ++++++----
 3 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/.stylelintrc b/.stylelintrc
index 3d86d2ac75..520451b321 100644
--- a/.stylelintrc
+++ b/.stylelintrc
@@ -18,7 +18,10 @@
     "declaration-empty-line-before": null,
     "declaration-no-important": true,
     "font-family-name-quotes": "always-where-recommended",
-    "font-weight-notation": "numeric",
+    "font-weight-notation": [
+      "numeric", {
+        "ignore": ["relative"]
+    }],
     "function-url-no-scheme-relative": true,
     "function-url-quotes": "always",
     "length-zero-no-unit": true,
diff --git a/scss/_variables.scss b/scss/_variables.scss
index 5cf118f033..b5ef7a45a9 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -257,9 +257,11 @@ $font-size-base:              1rem !default; // Assumes the browser default, typ
 $font-size-lg:                ($font-size-base * 1.25) !default;
 $font-size-sm:                ($font-size-base * .875) !default;
 
+$font-weight-lighter:         lighter !default;
 $font-weight-light:           300 !default;
 $font-weight-normal:          400 !default;
 $font-weight-bold:            700 !default;
+$font-weight-bolder:          bolder !default;
 
 $font-weight-base:            $font-weight-normal !default;
 $line-height-base:            1.5 !default;
diff --git a/scss/utilities/_text.scss b/scss/utilities/_text.scss
index 9d96c46562..9140910c5d 100644
--- a/scss/utilities/_text.scss
+++ b/scss/utilities/_text.scss
@@ -32,10 +32,12 @@
 
 // Weight and italics
 
-.font-weight-light  { font-weight: $font-weight-light !important; }
-.font-weight-normal { font-weight: $font-weight-normal !important; }
-.font-weight-bold   { font-weight: $font-weight-bold !important; }
-.font-italic        { font-style: italic !important; }
+.font-weight-light   { font-weight: $font-weight-light !important; }
+.font-weight-lighter { font-weight: $font-weight-lighter !important; }
+.font-weight-normal  { font-weight: $font-weight-normal !important; }
+.font-weight-bold    { font-weight: $font-weight-bold !important; }
+.font-weight-bolder  { font-weight: $font-weight-bolder !important; }
+.font-italic         { font-style: italic !important; }
 
 // Contextual colors