Can't seem to change font colour in image hover tex

Site URL: https://www.thebodcon.com/impact-grant

Hello! For whatever reason I cannot seem to figure out how to change the hover text from grey to another colour! I want it to match the rest of the site text colouring but I'm a bit of a coding newbie and can't seem to figure out how to change it. Any help is appreciated! Thanks in advance!

Add to Design > Custom CSS

.layout-caption-overlay-hover .image-caption p {
    color: red !important;
    font-size: 20px !important;
}