How To Center WordPress Twenty Fourteen

I really like the WordPress Twenty Fourteen theme.  I’m not sure why it sits to the left by default.  I wanted to center WordPress on my site, so I added the code below to the style.css file in my child theme.

.site {
margin: 0 auto;

Note:  Changes to a WordPress site should always be done via a child theme.  That way your changes are not lost when the parent theme is updated.