[JSWolf]

Even if it's a multi-line header/title/whatever, I still consider <br/> sloppy.
It just means you didn't take make the effort to code the CSS.

h1 {
text-align: center;
}
.spacet {
padding-top: 2em;
text-indent: 0;
}
.spaceb {
padding-bottom: 2em;
text-indent: 0;
}
_________________
<h1 class="spacet">LOVE AMONG</h1>
<h1>THE</h1>
<h1 class"spaceb">CHICKENS (A FOWL LOVE STORY</h1>
<h1>BY P.G. WOODHOUSE</h1>

Problem solved and very simple CSS code. Plus, the spaces could possibly be used again. For example, if you wanted a blank section break.

<p class="spacet">The beginning of the next section.</p>

The reason for padding instead of margin is that for a section break, it works much better at the end/beginning of a screen then does margin. You get the space passed to the next screen whereas you don't with margin.