In the slide show project, as well as the following projects, we rely on CSS to do much of the work. CSS, Cascading Style Sheets, is the language that mostly controls the appearance of the content of the page. You don’t have to be an expert on CSS to make this work, but you should know some of the basic ideas so that you can understand what is going on and can easily make changes.
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The background of CSS
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What CSS can do
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Using event listener functions to react to a user event ...