Elongated grid when theme is set

Question:
If I set an theme to the grid, it is elongated. The bottom toolbar icons also stack vertically.

Solution:
Please be sure to add the following to TOP of your page

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd”>

- OR - 

<!DOCTYPE html>

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