images

• You can specify the dimensions of images using CSS.
• This is very helpful when you use the same sized images on several pages of your site.
• Images can be aligned both horizontally and vertically using CSS.
• You can use a background image behind the box created by any element on a page.
• Background images can appear just once or be repeated across the background of the box.
• You can create image rollover effects by moving the background position of an image.
• To reduce the number of images your browser has to load, you can create image sprites.

  videos and audio

• It’s important to understand who your target audience is, why they would come to your site, what information they want to find and when they are likely to return.
• Site maps allow you to plan the structure of a site.
• Wireframes allow you to organize the information that will need to go on each page.
• Design is about communication. Visual hierarchy helps visitors understand what you are trying to tell them.
• You can differentiate between pieces of information using size, color, and style.
• You can use grouping and similarity to help simplify the information you present.