Definition and Usage(Recommended learning: HTML Getting Started Tutorial)
can define divisions or sections (division/section) in the document.
tag can divide the document into independent and different parts. It can be used as a strict organizational tool and does not use any formatting associated with it.
If
is marked with id or class, the tag will become more effective.
Usage
is a block-level element. This means that its contents automatically start on a new line. In fact, line breaks are the only formatting behavior inherent to
. Additional styles can be applied via the
's class or id. It is not necessary to add a class or id to every
, although there are certain benefits to doing so. It is possible to apply either class or id attributes to the same
element, but it is more common to apply only one of them. The main difference between the two is that class is used for groups of elements (similar elements, or can be understood as a certain type of elements), while id is used to identify individual and unique elements.
Tips:
Note:
is a block-level element, that is to say, the browser usually displays it before and after the div element Place a newline character.
Tip: Use the
element to group block-level elements so they can be formatted using styles.
Example:
A section in the document will be displayed in red:
<html>
<body>
<h3>This is a header</h3>
<p>This is a paragraph.</p>
<div style="color:#00FF00">
<h3>This is a header</h3>
<p>This is a paragraph.</p>
</div>
</body>
</html>
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