Internet Explorer

Internet Explorer
Internet Explorer currently has the largest user base, and versions 8
and below have very weak HTML5 and CSS3 support. IE 9 improves this
situation, but it’s not widely used yet. That doesn’t mean we can’t use
HTML5 and CSS3 in our sites anyway. We can make our sites work in
Internet Explorer, but they don’t have to work the same as the versions
we develop for Chrome and Firefox. We’ll just provide fallback solutions
so we don’t anger users and lose customers.