Validating HTML & CSS

[ecntrc]

So, I signed up at csscreator.com, I still wasnt able to fix my indention or margin problem with my clients site in FF so I turned to over there to try and get an answer. Well someone replied right away and said that I should or need to validate html and css first. Of course I was honest and said um **** I dont know what your talking about.. they gave me the links.. and i still dont know what to do to be honest? Is this really necessary also?? I didn tknow where this topic would ift in in the html section so i didnt know where to put it so i chose here..

[notjustgraphics]

Hey ecntrc

CSS Validators are useful for telling you if you have improperly formatted any of your CSS tags. Some also indicate when you've used tags not supported by one browser or another.

They will often recommend alteranatives or fixes for common problems.

I've had to use multiple style sheets to correct differences between FF and IE. By adding the following to my HTML, I can load different CSS for different browsers:

<!--[if IE 6]><link rel="stylesheet" type="text/css" href="css/iebad.css" title="Site default"><![endif]-->

I load the regular CSS first, and then IF the browser is IE6 I load the secondary CSS... duplicate identifiers will replace the ones from the first loaded CSS.

I usually use a standalone validator or the W3C Standards @ The W3C CSS Validation Service

Mike.

[Jacorre]

Firefox has a web developer toolbar that you can install and it comes with validation options such as validating your css and xhtml. I believe Internet Explorer also has a similar toolbar that can be installed. It can help you while coding your pages, meaning your code is up to par with the web standards.

[pollux]

im developing websites mostly in opera (currently v9.02). there is an online validator under right click menu...(ctrl-alt-v). then i am checking the webpage in IE and FF.
you can download a w3-dev toolbar to the opera, too. it is great...this toolbar helps you to see your webpage in specific resolution, whit css or withou...validating with few more validating services....etc.