From 3409608702b35caa98af68ff24626fda0e9bac30 Mon Sep 17 00:00:00 2001
From: George Claghorn <george@basecamp.com>
Date: Fri, 26 Jul 2019 21:37:25 -0400
Subject: [PATCH] Allow the thin and thick CSS keywords

They're used as values for the border-width property, which can be specified via the currently-allowed border shorthand property.

See https://www.w3.org/TR/css-backgrounds-3/#typedef-line-width.
---
 lib/loofah/html5/whitelist.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/loofah/html5/whitelist.rb b/lib/loofah/html5/whitelist.rb
index 467c1d6d..4898f4b9 100644
--- a/lib/loofah/html5/whitelist.rb
+++ b/lib/loofah/html5/whitelist.rb
@@ -635,6 +635,8 @@ module WhiteList
                                           "silver",
                                           "solid",
                                           "teal",
+                                          "thin",
+                                          "thick",
                                           "top",
                                           "transparent",
                                           "underline",