Changing Font Size

Hello,

I have tried using the following CSS to change the font size of the text below the images in the grid (as described in a previous post):

.postimage-title a
{

font-size: 20!important; /* Font Size 20" */

font-weight: bold!important; /* Bold Font Type */

}

You can see the page in question here: https://www.willowgalleryoswestry.org/workshops/

But it doesn’t work. Please can someone explain what’s wrong?

Many thanks for your help
Olly

https://www.ads-software.com/plugins/thumbnail-grid/