7.9.6 Providing CSS for drop-down links and blocks
By default, the CSS class for links and blocks is dropdown. To specify a different class:
The same class name can serve for all link types, and also for blocks. Use CSS to differentiate:
p.dropdown { drop-link text stuff }
a.dropdown { drop-link icon stuff }
button.dropdown { drop-link button stuff }
div.dropdown { drop block stuff }
See §22 Setting up CSS for HTML.
> 7 Producing on-line Help > 7.9 Including expandable sections in Help topics > 7.9.6 Providing CSS for drop-down links and blocks