Different images on page title using custom coding

Hi there,

I would need to have different images on the page titles of my website. I have tried a few things using custom coding, including:

#page-title {
background: url(https://ahjv-tg.org/wp-content/uploads/2018/12/IMG_1155-3.png) no-repeat;
background-attachment: fixed;
background-size: cover;
}

It hasn’t worked, and I am not sure what to do. Can you please help?

Thanks!

Pauline