Picture naming to denote order

HTML-CSS
1

Good evening

I need some help please. I have 2 pictures and currently both are labeled img. How can I change them so that I can denote so I can do different things to each one? FOr example img 1 and img 2.

pets-3389719_1280.jpg1280×854

thank you

2

You may use diffrent ids for each img like:

<img id="img-1" src="smiley.gif">
<img id="img-2" src="smiley.gif">
3

thank you - I was making it a lot harder than it was.