Design Better with CRAP

Probably not what you were thinking :) CRAP = Contrast / Repetition / Alignment / Proximity and all design starts from these four basic principles

• Contrast: Contrast refers to any difference of size, shape, or color used to distinguish text (or other elements, though here we’re focusing on text) from other pieces of text. The use of bold or italics is one common form of contrast — the difference in shape makes the bolded or italicized text stand out from the surrounding text. Increasing the size of headers and titles, or using ALL CAPS or smallcaps are other ways of distinguishing text. These techniques only work if used sparingly; a document typed in all capital letters has less contrast than one typed normally, so is harder, not easier, to read.
  

• Repetition: Repetition in your text is bad; repetition of your design elements is not only good but necessary. Once you’ve decided on a size and typeface for second-level headers, for instance, all second-level headers should look the same. For most documents, two or maybe three fonts — leaning heavily on one for all the body text, with the other two for headers and maybe sidebars — are enough. The same bullets should be used on every bulleted list. Information that appears on every page should appear in the same place on every page. Design elements — like horizontal rules between sections or corporate logos — should appear the same whenever they are used throughout the document. Repetition of design elements pulls the document together into a cohesive whole, and also improves readability as the reader comes to expect text that looks a certain way to indicate certain qualities (e.g. the start of a new section, a major point, or a piece of code.
  

• Alignment: Alignment is crucial not just to the cohesive appearance of your document but to the creation of contrast for elements like bulleted lists or double-indented long quotes. Your document should have a couple of vertical baselines and all text should be aligned to one of them. Unaligned text floats mysteriously, forcing the reader to figure out its relation to the rest of the document. Centered text is particularly bad (and is a novice’s favorite design trick). One immediate step you can take to vastly improve the appearance of your documents is to remove the “center” button from your software’s toolbar (or, less drastically, just ignore it). It is rarely self-evident what centering is meant to communicate, and too much centered text creates a sloppy, undisciplined look.
  

• Proximity: Pieces of information that are meant to complement each other should be near each other. One great offender here is business cards and ads in local newspapers, where the name, address, and phone number are all scattered around the ad or card (for example, in the corners). Your reader shouldn’t have to seek out the next logical piece of information; rather, use proximity to make sure that the next piece of information a reader sees is the next piece of information they should see.
  

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