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The <aside> tag is supported in Internet Explorer 9+, Firefox, Opera, Chrome, and Safari.
Note: Internet Explorer 8 and earlier versions, do not support the <aside> tag.
The <aside> tag defines some content aside from the content it is placed in.
The aside content should be related to the surrounding content.
The <aside> tag is new in HTML5.
Tip: The <aside> content could be placed as a sidebar in an article.
The <aside> tag also supports the Global Attributes in HTML.
The <aside> tag also supports the Event Attributes in HTML.
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