How to target just one slide for CSS in a gallery, Brine, 7.0?

Site URL: https://www.spaghetti75.com.au/home

Hi,

Can anyone help me with CSS to target just one slide at a time on the home page gallery so I can customise text colour/style?
Brine template, Squarespace 7.0.
Tearing my hair out, can only seem to target the text for all the slides or find yui or id's that only work until I refresh the page. The below work for the whole gallery.

.Index-gallery-item-content-heading { color: #333333 !important; font-style: italic; } 
.Index-gallery-item-content-body { color: #333333 !important; }

Thankyou so much!

Which slide you want to target?

Here the code for top slide

section#gallery-home h2.Index-gallery-item-content-heading {
    color: red;
    font-size: 30px;
}
section#gallery-home .Index-gallery-item-content-body p {
    color: green !important;
    font-size: 30px;
}

Thanks so much @tuanphan.

But how would I target just one slide rather than h1 or h2 that affects the style across all. Say if I had a slide that I need to make the text white on, and the next that I needed it all to be black to make it read over the image properly -how could I do that? Is this possible? thanku 🙂

THANKYOU @tuanphan!!!! Omg works, soooo grateful.

I lost so many hours trying to work this out. You're a legend! 🙂