This is a simple validator to check your browser's correctness....

My site conforms to level-5 HTML and level-3 CSS.

The top table below is generated (by your browser) from HTML and styles similar to those used in this site. Below that is an image showing what the table should look like.
Don't worry if the font sizes or the font itself don't match. What's important is whether or not the alignment, colors, relative sizes and styles are correct.