The p element represents a paragraph.
A p element must have a start tag.
A p element's end tag may be omitted if the
p element is immediately
followed by an
address,
article,
aside,
blockquote,
dialog,
dir,
div,
dl,
fieldset,
footer,
form,
h1,
h2,
h3,
h4,
h5,
h6,
header,
hr,
menu,
nav,
ol,
p,
pre,
section,
table, or
ul,
element, or if there is no more content in the parent
element and the parent element is not an
a element.