<DIV> elements let you apply a style across a group of elements, like the H1 and P here. The code:
<STYLE TYPE="text/javascript"> classes.bluebold.all.color = "blue" classes.bluebold.all.fontWeight = "bold" classes.bluebold.all.fontStyle = "italic" </STYLE> <DIV class="bluebold"><H1>DIV</H1> <P>...text...</P><DIV>