Customize title position of banner slideshow portfolio page

Hi, I have titles on the banner photos of the linked page. However, I want to refine the position such that it's just a little higher so it's not behind the blue arrows. The given customization only allows course positions. If I align it higher it goes up to the corner, which is too much.  I would like a way to dial in the exact position I want.

https://www.eddiekuo.design/craftsmanship/lumawood

You can use this code to Website > Website Tools > Custom CSS

.user-items-list-item-container[data-section-id="66221901f3557d3bbd478851"] .slide-content {
    position: relative;
    top: -50px;
}

is there a version where I can do page header code injection? I do have that option under the Advanced tab for each page, so I don't flood the custom CSS window with a bunch of per page edits.