1. 1 clean font (Gungsuh for everything except icons),
2. 1 css file only,
3. Clean CSS3 code,
4. Flat design,
5. Mobile optimized,
6. Errors and warnings free in w3school validation tools,
7. Compatible with all browsers including mobile browsers,
8. Responsive design fits any screen size and mobile,
9. Logo and icons are fonts and shouldn't change,
10. Use minimum number of modern colors).
The project is custom and not CMS or WordPress.