You kind of go in and out of the correct way doing this. As in the below example of your code...

Your spans should not be spans... make those spans actual H1 and H2 tags by themselves - don't use classes in the instances you have below, rewrite your HTML tags... Classes should be used rarely and only on special occasions! You want to stick to plain HTML as much as possible but stylize your HTML with CSS attributes to help with the presentation and SEO of your site (as well as reducing code glut and maintenance times).

Fix this by giving your H1 and H2s the attributes of the "Header_title_blue" class or wherever else it is relevant and switch them all out and you will be fine.

<td width="20" align="left" valign="top" class="H2"><span class="Header_title_blue">&gt;&gt;</span></td>
<td width="112" align="left" valign="top" class="H2">Print Process
&amp; Services </td>
<td width="20" align="left" valign="top"><span class="Header_title_blue">&gt;&gt;</span></td>
<td width="112" align="left" valign="top"><span class="H2">Digital &amp; Offset Equipment </span></td>
<td width="20" align="left" valign="top"><span class="Header_title_blue">&gt;&gt;</span></td>

<td width="112" align="left" valign="top"><span class="H2">Print &amp; Design Portfolio </span></td>