iPad 1 not reading CSS

I have designed a website – www.mikhaililiev.com – and it doesn’t load properly on the iPad 1. It works beautifully on the iPad 2 and 3, Surface, and IE, Firefox, Chrome, and Safari on a desktop/laptop.

It appears as though the iPad 1 doesn’t read the css file. Does anyone know what might be going wrong? I have run my code through the w3 CSS and HTML validators and fixed the errors found there, but it still doesn’t work on the first generation iPad…

Thanks in advance…