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A few people have asked me what I did to make this [website] so fast.

The answer is: nothing.
I just didn't add anything to make it slow.

I kept it simple.
The pages are pre-rendered.
The CSS is inlined.
I didn't add unnecessary javascript.
The work was done before you got there.

Your websites start fast until you add too much to make them slow. Do you need any framework at all? Could you do what you want natively in the browser? Would doing it without a framework at all make your site lighter, or actually heavier in the long run as you create or optimize what others have already done?