Curious...
Only it happens when there is only one line of code inside <body>.
With two lines working properly.
Code:
<h1>C<span class="smallcaps">HAPTER</span> O<span class="smallcaps">NE</span></h1>
<h1>C<span class="smallcaps">HAPTER</span> O<span class="smallcaps">NE</span></h1>