Hi there,

There are some good ideas about the transitions in your site. The sliding which is mixed in a horizontal and vertical way is well done. I'm not a fan of big flat color but still this is a personal choice. I think big flat colors make you lose accuracy in your design and this should be more "clean" without or with less flat colors.

Pay attention to your hosting, some requests don't work.
The work section is nicely done, just a hint, your logo in the right section is a good idea but it should redirect us on the contact page not the home.

Good luck for your agency!