HTML and CSS Reference
In-Depth Information
developers to embed audio without the need for third-party
plug-ins.
</p>
Recall from Chapter 1 that the
<p>
element is used for blocks of text, comparable to a paragraph within a text doc-
ument. You learn more about using
<p>
elements later in Chapter 4.
The implied hierarchy of this content is a top-level section,
HTML5 Rocks,
with two second-level sections beneath,
The Video Element
and
The Audio Element.
The two
<h2>
elements are given equal rank and therefore both appear
as “children” of the
<h1>
element. Figure 3-1 shows how this text would be presented in the browser. Note how the
two
<h2>
elements are displayed in smaller text than the
<h1>
element, indicating their relative importance.
Figure 3-1
Page hierarchy.
Where is the code that tells the browser to use a larger font for the
<h1>
elements and a smaller font for the
<h2>
elements? It's in the Cascading Style Sheet (CSS)! Web browsers include a default set of basic styles in a
user
agent stylesheet
.
