Build images using web safe colors. The function of each button must be clear. This may require text to be placed on the button or use text links in addition to the button graphic. Buttons should be kept to a practical size. Large enough to be seen but not so large that they over power the design of the site.
Buttons don t have to be square.
Build buttons to match the overall design of your site. Keep the following ideas in mind when building graphics for these purposes. Be aware of size. Mastheads are typically large images but they must still fit on a typical browser window. Mastheads set the tone for the site.