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1.618 is a number all serious designers should know. It's known as the golden ratio found throughout nature, art and architecture. Seashells, the Mona Lisa and the Parthenon all show the golden ratio.

One of the most important pages for a web app business is the pricing plan page. If users can't see the value they'll get by signing up, they won't even think about giving you their money.

Have you ever passed on a product because you didn’t like its color? Color affects the way we feel about websites, but it can also affect the way we use them.

When designers talk about leading, they're not talking about mechanical pencils. They're referring to the spacing between lines of text measured from baseline to baseline.

If your website sells products, it's important that your product images appeal to users. Beauty of an image doesn't just come from typography and color.

Can you believe a woman got fired from her job for using all caps in an email? There's something about all caps text that turns people off. Using it in a social context means you're yelling.

What does ABC, CNN and Fox News all have in common? They only use Arial as their font for their text. This makes the headings hard to distinguish when users scan.