how come templates don't work properly with <div>??

Hi,

I hope anyone can help me with this problem.

I have created a template in dreamweaver mx. This template contains <div> tags which use a class that contains a position value.

See below:

DIV.center
{
position:absolute;
left:25%;
top:35%;
margin-left:-150px;
margin-top:-150px;
}


Without the div tags the template works great but when i add the div tags I cannot enter data in between the editable region tags of the document that has the template attached to it.


I get this error message: " Making this change would require changing the code that is locked by the template or translator. The change will be discarded"

Has anyone seen this problem before?

Tom