hello everybody welcome back to css3 in
30 days today is a unique lesson and we
won't actually be doing any coding
within the video however i encourage you
to play around with what you're about to
learn
after the fact we css3 ninjas like to
push the boundaries of web design which
means that we get to dance on the
bleeding edge of supported code
unfortunately everyday ordinary browsing
citizens and their old and outdated
browser software may not be as
fresh as us fear not there's a css3 rule
that recognizes the downfalls of
everyday ordinary browsing citizens
rectifies the problem and leaves the
user blissfully unaware of our epicness
it's simple really just use the at
supports rule and pass in a css
property value pair to test whether or
not the browser recognizes it like so
now if the browser understands it will
render the code between the curly braces
otherwise it will move on
like a chump
[Music]