CSS and IE v FF

Below is some CSS.  When I use EE, all is OK.   However, using FF, things do not work correctly.  Now I believe there are CSS tags that are different between browsers, and I have seen CSS where both a EE and FF recognized tags are included.  Can anyone tell me for the CSS below if there are FF specific tags that I need to make this work?

.MPHeader {
      background-color: #a7c6e2;
      height: 30px;
      left: 0px;
      padding-left: 10px;
      padding-right: 10px;
      z-index: 3;
      top: 0px;
      width: 100%;
      position: fixed;
      
}

.MPFooter {
      background-color: #a7c6e2;
      height: 40px;
      left: 0px;
      padding-left: 10px;
      padding-right: 10px;
      z-index: 3;
      bottom: 0px;
      width: 100%;            
      position: fixed;
}

.MPSizeOne {
      height: 800px;
      width: 1000px;
}
      
.MPContainerSizeOne .scrollRegion {
      height: 710px;            /* height - 90 */
      left: 0px;
      overflow: auto;
      padding-left: 10px;
      padding-right: 10px;
      z-index: 2;
      top: 40px;
      width: 970px;            /* width - 30 */
      position: absolute;
}
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HLRosenbergerAsked:
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Zac HarrisSystems Administrator Commented:
You can usually have a media query as a wrapper around your CSS rules to target the Firefox browser. Here is an example:

@-moz-document url-prefix() {
            <!--Enter CSS selector here-->
}

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Fernando SotoRetiredCommented:
Not all web browser were created equal. If you need to see is something such as CSS, HTML, JS.API are supported in a browser then check out this web site.

Can I use  _________ ?
Snarf0001Commented:
But, you're not using anything in the above CSS that's new or requires browser prefixes.  It's all standard css elements that have been around for a long time and fully supported by all browsers for an equally long time.

But they do each have minor quirks that cause layout to change.  You'd have to post the site or code so we can see the full page to pick out what the problem is.

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HLRosenbergerAuthor Commented:
thanks
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