Image with Text Overlay Hero - Change Text Background Colour

i’d like to add a background colour to the text on my Image with Text Overlay hero image to make the text stand out more (using my primary brand colour #ffc000) any idea how it could be done?

using Debut, URL - themanchestershop.co.uk (currently using gallery sections)

thanks in advance!

Hello There,

Admin go to online store → themes → actions → edit code
Find Asset >theme.scss.css and paste this at the bottom of the file:

.image-bar__caption span {
    background-color: #000;
    padding: 0 0.5em;
    border: 1px solid;
    border: 3px solid #fff;
    border-radius: 25px;
}