Insert images in codepen

I am doing the portfolio page and I would like to know hoow toinsert an image from the computer’s desktop and to put it as a background,
have you got any tips?

Sorry, i wanted o write how instead of hoow and to insert instead of toinstead

You can upload it to free image hosting and use the url to

<img src="putYourURLHere">

Thanks, and you got any tipsfor how to put it as a background ,please?

use background-image property in css

    background-image: url("putYourURLHere");

So much thanks for your help!