</h3>
					<p>
						In a chapter, all panels on a row <b>inherit the height of the tallest panel in it</b>, so that no empty space is left.
					</p>
				</section>
				<section class="panel box" id="panel-float">
					<h3>
						Element floats
					</h3>
					<p>
						A <dfn id="dfn-float">float</dfn> is a utility class to align items in panels without having to write CSS.
					</p>
					<p class="float-bottom">
						For example, if a panel has some empty space, elements can be made to
						<b>float to