Description:

The <em> tag is used for indicating emphasis. The em tag surrounds the word/term being emphasised.

Example Code:
I can <em>not</em> emphasise this enough!
Result:
I can not emphasise this enough!
Attributes:

None

Global Attributes:

The <em> tag also supports the Global Attributes in HTML5

Event Attributes:

The <em> tag also supports the Event Attributes in HTML5