cascading style sheets
This visual presentation relies in part on a technology called
css,
short for cascading style sheets. Most modern graphical browsers have this
technology built into them. In principle, browsers are supposed to make use of
css
if they can, and ignore it if they cannot. The reality is somewhat less ideal:
certain older browsers such as Netscape
Navigator 4 and MS
Internet Explorer 4 often fail to correctly display
css-enhanced
web pages.
In order to serve visitors who use those browsers,
all css
instructions have been hidden from them. Thus, they
will receive the same content as other users,
albeit with a rather plain presentation.