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Span and Div

HTML is all about applying meaning to content. Whereas most HTML tags apply meaning (p makes a paragraph, h1 makes a heading etc.), the span and div tags apply no meaning at all. This might sound about as useful as a foam hammer but they are actually used quite extensively in conjunction with CSS.

They are used to group together a chunk of HTML and hook some information onto that chunk, most commonly with the attributes class and id to associate the element with a class or id CSS selector.

The difference between span and div is that a span element is in-line and usually used for a small chunk of HTML inside a line (such as inside a paragraph) whereas a div (division) element is block-line (which is basically equivalent to having a line-break before and after it) and used to group larger chunks of code.

<div id="scissors">
    <p>This is <span class="paper">crazy</span></p>

div, and especially span, shouldn’t actually be used that often. Whenever there is a sensible alternative that should be used instead. For example, if you want to emphasize the word “crazy” and the class “paper” is adding italics for visual emphasis, then, for richer, more meaningful content, the code might look like this:

<div id="scissors">
    <p>This is <em class="paper">crazy</em></p>

If you haven’t got a clue about classes and ID’s yet, don’t worry, they’re all explained in the CSS Intermediate Tutorial. All you need to remember is that span and div are “meaningless” tags.