"Beware the Power of the Dark Side, Luke...."
The most popular Web browser is still Internet Explorer with over
95% 80% of the browser market.
Later versions of IE do a better job of meeting standards than they used to. However they are not perfect.
For those interested how compliant their browser is check out Browser Support Summary
Internet Explorer also has a number of non standard extensions which are not supported by the W3C Standards - you should avoid using these.
Internet Explorer also suffers from the drawback of being too forgiving, allowing a range of sloppy coding to be rendered, but perhaps not in the way you intended.
Firefox is a browser based on the Mozilla/Gecko Engine.
It is far more W3C standards compliant and less forgiving of sloppy code.
You should check your pages in Firefox to make sure they are rendered
properly in that browser.
If your page renders in Firefox you have probably written good markup.
It also has some nice web development tools built in which we will be handy
later in the course.
Its free and only 4.7 mb in size !.
There is also an 'Easter Egg' in Firefox.
To view it, launch Firefox and type about:mozilla in the address bar
then press the Enter key.
Alternatively you can validate your code against the W3C standards.