sometime in 7.7 the header tags in the templates have ben standardized. (www.webgui.org/design/template-working-group/h1-vs-h2-in-pagelayout-templates)

• h1 for the site/company name in the style template
  
• h2 in the layouts
  
• h3 for all assets (used to be majority of h2)
  

For those wondering what the default HTML sizing/formating was before these were changed, you can find it here; www.w3.org/TR/CSS2/sample.html

h1 { font-size: 2em; margin: .67em 0;font-weight: bolder }
h2 { font-size: 1.5em; margin: .75em 0;font-weight: bolder }
h3 { font-size: 1.17em; margin: .83em 0;font-weight: bolder }
h4 { margin: 1.12em 0 ;font-weight: bolder}
h5 { font-size: .83em; margin: 1.5em 0;font-weight: bolder }
h6 { font-size: .75em; margin: 1.67em 0;font-weight: bolder }

In otherwords, what was h2 in the templates, is now being displayed as h3 so you can use the above information to modify your stylesheet.