thinkprague With this Google font, you edit LESS file to use this font.
Try these steps:
1 - Go to file: root/templates/ja_allure/less/variables.less
2 - Look for code which define typography:
// Typography
// -------------------------
@font-family-cormorant: 'Cormorant', serif;
@font-family-sans-serif: 'Work Sans', sans-serif;
@font-family-serif: 'Faustina', serif;
@font-family-monospace: Monaco, Menlo, Consolas, "Courier New", monospace;
@font-family-base: @font-family-cormorant;
add a new variable for Cormorant font family and assign it to @font-family-base as above
3 - Backup your site and compile less to css: https://www.t3-framework.org/documentation/bs3-configuration#compile-less
Regards