Use sensible defaults on html and body elements.
Use sensible defaults on html and body elements.

Make sure that most HTML elements use theme styling.

Note that this technically changes the default font from Dosis to Open
Sans. Since much of the site's existing text already used Open Sans and
Dosis is also used in the site's most prominent headers, this should
not be a significant issue.

pydata/conf_site,pydata/conf_site,pydata/conf_site