Use only those graphics, which enhance your content. Provide textual alternatives. Remember that some people never turn on images. It is easier to navigate familiar pages and users can find what they need more quickly Include navigation buttons When the page layout changes significantly the user thinks they've left your site. Underlined text implies a hyper link.
Italics can be difficult to read.
Use colored text sparingly, color implies text has special meaning. Colored text creates a cognitive and perceptual load for users and slows reading time.