CSS problem IE

Permalink
Hello,

I have a problem with building themes. First I build a theme with HTML/CSS test it in different browsers (IE7/IE8/IE9/FF/CHROME/ etc.)
I all works well. Then I put in the code what is editable and make a them.

First problem:
When uploaded I my CSS is interfering with the C5 CSS? So menu items in the C5 are changed (like H1 etc).

Second problem:
Is linked with the first problem I guess. The website is not working good in IE (7, 8 & 9)

What do I do wrong. Please help!

Here is a website i made that looks good in FF but fails in IE.
http://bit.ly/riaxUS
(used bitly so link does not shows up in a search-engine)

I got same problems in new website I am building.

 
ConcreteOwl replied on at Permalink Reply
ConcreteOwl
Your header is missing the !doctype declaration..
ConcreteOwl replied on at Permalink Best Answer Reply
ConcreteOwl
Try adding this on line 2
<!DOCTYPE html>

after this (line 1)
<?php   defined('C5_EXECUTE') or die(_("Access Denied.")); ?>
mesign replied on at Permalink Reply
Thank you so much!
I feel really stupid that I have overlooked that.
ConcreteOwl replied on at Permalink Reply
ConcreteOwl
Part of being a community my friend and your welcome by the way..