CSS : Golden Gate Bridge [Day]

Hey ! Here is my sunday experiment !
The Golden gate bridge in pure CSS !

So, I created it on codepen, and I declined it in two version : Day and Night.

It's not intended to appear on a website or application, it's just what I like to call "CSS Art" .. Even if CSS is Art, this is a more complex example of what is possible to create with CSS, plus, it helps to focus and relax. At least for me.

Do not hesitate to check the both Night and Day versions.
Feedbacks are welcome, sharing is awesome.

Golden Gate Bridge [Day]
Golden Gate Bridge [Night]

And don't forget to check the attached files to see code samples.
Cheers !