Home page banner text alignment

Site URL: https://www.residenthouse.com.au

The text overlayed on my homepage banner is sitting to the left and I can't seem to centre it. Site styles appear as centered. The problem is just with the 'Title', the 'Description' is fine. It wasn't like this originally it just changed and I couldn't revert back.

Hi. Add to Design > Custom CSS

/* Center homepage text */
body.homepage h2.Index-gallery-item-content-heading {
    text-align: center;
}