A recessed element with maximum width and adjusted vertical alignment is all you need.
Fragment Mark:
<ul> <li>Chapter One - <span class="desc">This is chapter one text text text text text text text text</span></li> </ul>
Style shots:
span.desc { display: inline-block; max-width: 10em; vertical-align: top; }
The maximum width of 10em is my chosen value, adjust it according to preference.
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