Different styling for Logo, Title and Tagline.

Currently have:
ATO=>Style & edti HEADER AREA=>Configure Header Area:
<div id="mylogo"><a href="http://www.gc.cuny.edu"><img src="http://library.gc.cuny.edu/mrl365_2/wp-content/themes/atahualpa/images/gc_logo.jpg" alt="Mina Rees Library" /></a></div><h2 class="blogtitle"><a href="http://library.gc.cuny.edu/">Mina Rees Library</a></h2><p class="tagline"><a href="http://www.gc.cuny.edu/">CUNY Graduate Center</a></p>
%logo %pages %image


Based upon this thread:
http://forum.bytesforall.com/showthr...9927#post89927

How do I style the logo, title and taglines differently?

Do I need to do this:

<div id="mylogo"><a href="http://www.gc.cuny.edu"><img src="http://library.gc.cuny.edu/mrl365_2/wp-content/themes/atahualpa/images/gc_logo.jpg" alt="Mina Rees Library" /></a></div>

<div id="mytitle">
<h2 class="blogtitle"><a href="http://library.gc.cuny.edu/">Mina Rees Library</a></h2>
</div>

<div id="mytagline"><a href="http://www.gc.cuny.edu/">CUNY Graduate Center</a></p></div>

and then define the css on mylogo, mytitle, mytagline?
And if so where?

Also, please see:
http://forum.bytesforall.com/showthread.php?t=20562