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Making a Site Accessible
Alternative text for images
Short, but accurate description of image
Provide equivalent experience
For decorative or spacing images use empty quotes (alt="") for the alternative text (otherwise a screen reader may read the filename.)
Long descriptions of videos and some images
Transcripts of audio and video
Alternate methods of navigating site
Make top item in a pull down list clickable
Provide text in addition to image maps
Don’t rely on color alone to transmit information
Images should be understandable without color
Provide alternatives to color coded text
Use proper structural markup
Use Heading tags for headings
Don’t just increase font size
Headings should be like an outline: heading level 1 must be used before heading level 2, hence the first heading of a page should always be a level 1 heading (h1)
If a heading is a subheading the the previous heading then it becomes the next level.
If you have a heading 1 and the next heading is a subheading of that heading then it is a level 2 heading. If the next heading is a subheading of the heading 2 then it is heading 3. If it isn't a subheading of the heading 2 but is a subheading of the previous heading 1 then it is a heading 2, else it is a heading 1. (The will be more understandable when working on the next exercise.)
Several headings of each level may be used.
paragraphs, blockquotes, lists are used appropriately
If the order does matter, then it's an ordered list
If the order does not matter, then it's an unordered list
If the list is a set of terms with descriptions or definition, then it is a descriptive/definition list.