🐛 fix: remove flashing from header text (Firefox)

Loads a subset of the sans-serif font for the header.

Fixes #75

sass/main.scss

@@ -2,7 +2,7 @@
     /* Copyright 2016 The Inter Project Authors (https://github.com/rsms/inter). Licensed under the SIL Open Font License, Version 1.1. More information available at: http://scripts.sil.org/OFL */
     font-family: 'Inter';
     src: local('Inter'),
-        url('fonts/Inter4.0-beta8.woff2') format("woff2");
+        url('fonts/Inter4.woff2') format("woff2");
     font-display: swap;
 }
 

sass/parts/_header.scss

@@ -1,4 +1,5 @@
 header {
+    font-family: 'Inter Subset', var(--sans-serif-font);
     width: 100%;
 
     .main {