diff --git a/guide/english/css/margins/index.md b/guide/english/css/margins/index.md
index dc6ebd1679..59042c2ed1 100644
--- a/guide/english/css/margins/index.md
+++ b/guide/english/css/margins/index.md
@@ -70,10 +70,10 @@ An element can be aligned to the center by making it a block element and changin
  - `%` implies relative to the parent element.
 
 ## Browser Support
-It is effectively supported in all browsers (since IE6+, Firefox 2+, Chrome 1+ etc)
+It is effectively supported in all browsers (since IE6+, Firefox 2+, Chrome 1+, etc).
 
 ### More Information
-- <a href='https://www.w3.org/TR/css3-box/#the-margin' target='_blank' rel='nofollow'>W3C Working Draft</a>
+- <a href='https://www.w3.org/TR/css-box-3/#margins' target='_blank' rel='nofollow'>W3C Working Draft</a>
 - <a href='https://www.w3.org/TR/CSS2/box.html#propdef-margin' target='_blank' rel='nofollow'>W3C CSS Level 2</a>
 - <a href='https://www.w3.org/TR/CSS1/#margin' target='_blank' rel='nofollow'>W3C CSS Level 1</a>
 - <a href='https://developer.mozilla.org/en-US/docs/Web/CSS/margin' target='_blank' rel='nofollow'>MDN Web Docs</a>