style.css

/*
Theme Name: Hack Hitchin
Theme URI: http://hackhitchin.org.uk
Version: 2.1.3
Author: Rob Berwick
Author URI: http://hackhitchin.org.uk
Maintainer: Mark Thompson
Update URI: https://github.com/hackhitchin/hitchin-hackspace-wordpress
*/

@import "style/css/typography.css";
@import "style/css/layout.css";
@import "style/css/mailchimp.css";

/** pseudo-lightbox */
figure.wp-block-image:focus-within, .has-lightbox:focus-within .lightbox-container {
    position: fixed;
    z-index: 10;
    inset: 0;
    background: black;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    margin: 0;
    padding: 4em;
    gap: 2em;
    background: #000000f0;
    backdrop-filter: blur(10px);
}

.has-lightbox .lightbox-container {
    display: none;
}

figure.wp-block-image:focus-within figcaption {
    color: white;
}

figure.wp-block-image:focus-within img, .has-lightbox:focus-within .lightbox-container img {
    display: block;
    flex: 0 1 auto;
    overflow: hidden;
    max-width: 100%;
    width: auto;    
}

figure.wp-block-image:focus-within img, .has-lightbox:focus-within .lightbox-container img {
    scale: 0.8;
    opacity: 0;
    animation: intro 0.3s forwards;
}

@keyframes intro {
    to {
        scale: 1;
        opacity: 1;
    }
}