Ubuntu 12.04 Apache 2 - Inline CSS working but external CSS not working

Question

In installed apache2 for use as a development server. Created my site, and it loads correctly in my browser, except that...

External CSS stylesheets don't load. Inline CSS works, and the style tag works, but link rel="stylesheet" type="text/css" href="style.css" doesn't seem to do anything.

My apache2.conf is unedited. Here are my php5.conf file and my site conf file, in case they are needed:

mods-enabled/php5.conf

<IfModule mod_php5.c>
    <FilesMatch "\.ph(p3?|tml)$">
  SetHandler application/x-httpd-php
    </FilesMatch>
    <FilesMatch "\.phps$">
  SetHandler application/x-httpd-php-source
    </FilesMatch>
    <FilesMatch ".+\.html$">
        SetHandler application/x-httpd-php
    </FilesMatch>
    <FilesMatch ".+\.htm$">
        SetHandler application/x-httpd-php
    </FilesMatch>
    <FilesMatch ".+\.xhtml$">
        SetHandler application/x-httpd-php
    </FilesMatch>
    # To re-enable php in user directories comment the following lines
    # (from <IfModule ...> to </IfModule>.) Do NOT set it to On as it
    # prevents .htaccess files from disabling it.
    <IfModule mod_userdir.c>
        <Directory /home/*/public_html>
            php_admin_value engine Off
        </Directory>
    </IfModule>
</IfModule>

sites-enables/au.camarillo.conf

NameVirtualHost au.camarillo
<VirtualHost au.camarillo>
ServerAdmin daniel@camarillo
#we want to be able to access the web site using www.au.camarillo or au.camarillo
ServerAlias www.au.camarillo
DocumentRoot /home/daniel/sites/au
#we want specific log file for this server
CustomLog /var/log/apache2/au.camarillo-access.log combined
</VirtualHost>

Solution

I also had faced the same problem but I got a solution. The solution is:

<link href="./css/stylesheet.css" rel="stylesheet" type="text/css" />

Note that the "." before "/css" is indicating the current working directory on Ubuntu. I hope this will help you.