Custom CSS - Change color of specific button

Hi there,

I am trying to change the color of only one specific button on my website. There are three buttons with a background color of #333 in this specific section, and I would like to change the color of the first button to some other shade of grey.

I have looked at the code in the chrome devtools and identified the element. I tried "grabbing" it with the elements ID and the class and using something like :first-child but I can't seem to find the first button only. I always end up changing the color of them all.

Can someone point out to me what I might do wrong here?

Tanks in advance!

Can you share link to this page?

https://www.patricklemmer.com/

Thanks @tuanphan. That did the trick!