avoid using the heading 1 style. it is already used for the logo text and should be used only once on a web page.
plain text style is white. Don't trust the Contribute view of your text and headings. It will look slightly different in a real browser. Headings will be bolder there.
links look like this, visited versions have same color and no underline
Images on the LEFT side of the 1/3–2/3 split view should be no wider than 238 pixels.
Images on the RIGHT side of the 1/3–2/3 split view should be no wider than 494 pixels.