Base URL in .htaccess

Question

I wonder if this is possible to tell via .htaccess or any other manners to set a base URL.

Example

My CSS in the index.php is set like this

Answer 1

You're looking for the html base tag. To quote the docs:

For example, given the following BASE declaration and A declaration:

 
  
       
          
        
   
       
       
Have you seen our 
           Bird Cages?  
    
 

the relative URI "../cages/birds.gif" would resolve to:

http://www.aviary.com/cages/birds.gif