PHP: Can't reference css file?

Recently learning PHP, to the third chapter of the time stuck. I quoted an HTML template, but this template cannot reference a CSS file, which is the HTML template:

    <?php echo $page_title; ?>        
  
       
  
               
Your Website
        
catchy slogan...
                
  
   
   
 
    
Home Page
 
    
Calculator
 
    
link three
 
    
link four
 
    
link five
 
   
        
  
   
  
   

However, I passed in the table header in the

Yes, it can work:

My project file structure:

Reply content:

Recently learning PHP, to the third chapter of the time stuck. I quoted an HTML template, but this template cannot reference a CSS file, which is the HTML template:

    <?php echo $page_title; ?>        
  
       
  
               
Your Website
        
catchy slogan...
                
  
   
   
 
    
Home Page
 
    
Calculator
 
    
link three
 
    
link four
 
    
link five
 
   
        
  
   
  
   

However, I passed in the table header in the

Yes, it can work:

My project file structure:

Relative path is wrong. Try changing the path to your PHP reference and move the link down.

CSS that you see is not the path problem

Relative path

I think your template is two points, that is, the top level directory

The style tag is a dot

By the way, it is still not possible to refer to this path by link ./includes/style.css .

Why use PHP to reference CSS files? It's not scientific.

CSS references are all used

This form of = =, you kind of is the PHP include file, CSS does not have that kind of

The problem of the path, you are in header.html inside the introduction of CSS problems?
It's supposed to be./style.css
Or is it. /includes/style.css this.

Use the absolute path test can be effective and then change to a relative

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