Can your text file look like this, where you insert HTML/CSS into the actual text file?
The first line looks at your CSS style sheet for the class called "topLine".
The next line uses "inline CSS" to define it right there in the line.
Wherever you want that text file to appear, you include it ...
<div class="topLine">Lilly Creightmore</div><br />
<span style="color:#a00000";>Homemaker, photographer, blogger.</span><br />
Crystal Palace, London, United Kingdom, January 2011<br />
Hi there, this is my site <br /><br />