You may run into the situation where you have too much text for the size of your button. Beginning with LCARS 8 you can add the class "two-rows" to the *a* tag and the resulting font will be smaller, and the padding inside the button will allow for 2 rows of text. Just remember to include the <br> tag to separate the two rows of text.
<a href="url" class="two-rows">button top row<br>bottom row</a>
For more information on utilizing LCARS style buttons with the LCARS website template, check out the Buttons page.