Block-level elementsSection
HTML
<p>This paragraph is a block-level element; its background has been colored to display the paragraph's parent element.</p>
<div>
aaaa<br />
<h3>This is header</h3>
<p>bbfbbjoj</p>
</div>CSS
p { background-color: #8ABB55; }
h3 {
display: inline;
background-color: red;
page-break-before: always;
}