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CSS Bootstrap Basics Getting to Know Bootstrap Creating a Simple Page

Sincere Villanueva
Sincere Villanueva
5,992 Points
Posted by Sincere Villanueva
Sincere Villanueva
5,992 Points

Horizontal centering with "mx-auto"

Per the documentation, "mx-auto" can only be used on content that has "display: block" and a "width" set. I do not see where either of these properties were defined in the code.

Could someone please explain where these properties were defined?

Thanks so much!

Mike Schaming
Mike Schaming
13,925 Points
Mike Schaming
Mike Schaming
13,925 Points

Hi- I'm assuming the display and width are included in the class used for the input- accessed from the Bootstrap CDN. But I may be wrong- it's a little different for me not using a CSS file.

1 Answer

Iain Simmons
Iain Simmons
Treehouse Moderator 32,305 Points

Note that many HTML elements have a display value of block set by default (or rather, by the user agent/browser), and would then effectively have a width of 100%.