Cross-compatibility

What sets web standards apart from the old school
is that there’s nothing specific to one browser or another. A common web
design problem has been the “necessity” of developing one page for one
browser and one page for another. Even today, some sites are made to work
solely in Microsoft’s Internet Explorer (IE), excluding a small, but significant,
percentage of users. But barring a few minor discrepancies, following web
standards will ensure that pages will work everywhere. No alternative versions
needed, no “IE only (we’re too lazy),” no exclusion of users.