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I like the colors and the style, it's all working. For wording the 3rd line of larger text - "work even harder", may sound better and be correct if it was "work even better". I guess it depends on your approach, works better sounds like the code is more refined and works better, harder would be maybe it acts as a better sales tool or something.
The navigation I would probably center, looks off balanced being right aligned, plus you have a lot of centered elements already.

thanks for the feedback! I might end up changing the text to better.