O, sorry, looks like Shopify allows you to paste into “Custom CSS” but does not save.
Try this:
add a “Custom liquid” section right below your slideshow and paste this:
<style>
.slideshow-slide .button {
position:static;
opacity:0;
}
.slideshow-slide .button:after {
content: "";
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100%;
}
</style>
Same code – different way of appying.
Preview in my test store: https://25bcqkgfe72mce19-23104437.shopifypreview.com
I try to avoid theme code edits – it will make future theme updates problematic.