Add hover + title to the index gallery

Site URL: https://bugle-springtail-4na6.squarespace.com/

Hello,

How can I make the title on the index gallery to show up only on hover?

https://bugle-springtail-4na6.squarespace.com/

password: 123

thank you!!

Use this code

article:hover h2.Index-gallery-item-content-heading {
    opacity: 1;
}

h2.Index-gallery-item-content-heading {
    opacity: 0;
    transition: all .3s ease;
}