Custom font setup



I am trying to install custom font for my client’s landing page. I have few questions:

  1. Can I upload the font files to my web server instead of upload to client’s server?
  2. After I add CSS code to the landing page, can I preview the font before publish the page?
  3. After I placed the Access-Control-Allow-Origin: * header to .htaccess file, the website doesn’t work, any idea about it?