Center logo & sitename when they stack on tiny screens

No really that's what that does.

web/themes/custom/geofresco/src/global/global.scss

@@ -10,6 +10,8 @@ $green-gray: #8FB489;
 // Update Bulma's global variables.
 $primary: $green;
 
+$mini: 363px;
+
 // Import each part of Bulma separately so we can layer in our styles.
 // Extend or override Bulam's base styles in this themes base.scss etc.
 @import "../../node_modules/bulma/sass/utilities/_all";