From http://www.w3schools.com (Copyright Refsnes Data)

HTML 5 <p> tag

Definition and Usage

The <p> tag defines a paragraph.

Differences Between HTML 4.01 and HTML 5

The align attribute, which was deprecated in HTML 4.01, is no longer supported in HTML 5.

Tips and Notes

Tip: You should not use the <p> element when other elements are more appropriate.

Example

Source	Output
<p>This is some text in a very short paragraph</p>	This is some text in a very short paragraph

Attributes

4: indicates if the attribute is defined in HTML 4.01
5: indicates if the attribute is defined in HTML 5

Attribute	Value	Description	4	5
align	left right center justify	Specifies the alignment of the text within the paragraph. Not supported. Use CSS instead	4

Standard Attributes

class, contenteditable, contextmenu, dir, draggable, id, irrelevant, lang, ref, registrationmark, tabindex, template, title

For a full description, go to Standard Attributes in HTML 5.

Event Attributes

onabort, onbeforeunload, onblur, onchange, onclick, oncontextmenu, ondblclick, ondrag, ondragend, ondragenter, ondragleave, ondragover, ondragstart, ondrop, onerror, onfocus, onkeydown, onkeypress, onkeyup, onload, onmessage, onmousedown, onmousemove, onmouseover, onmouseout, onmouseup, onmousewheel, onresize, onscroll, onselect, onsubmit, onunload

For a full description, go to Event Attributes in HTML 5.

Try-It-Yourself Demos

Simple paragraphs
How paragraph elements are displayed in the browser.

More paragraphs
Some of the default behaviors of paragraph elements.

Poem problems
Some problems with HTML formatting.