WhiteSur-gtk-theme/src/sass/gnome-shell/_common.scss

//This is the RIGHT PLACE to edit the stylesheet

//let's start by telling people not to edit the generated CSS:
$cakeisalie: "This stylesheet is generated, DO NOT EDIT";
/* #{$cakeisalie} */

/* Copyright 2009, 2015 Red Hat, Inc.
 *
 * Portions adapted from Mx's data/style/default.css
 *   Copyright 2009 Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU Lesser General Public License,
 * version 2.1, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 */

// Stage
stage {
  @include fontsize($base_font_size);
  color: $fg_color;
}

/* General Typography */

%large_title {
  font-weight: 300;
  @include fontsize(24);
}

%title_1 {
  font-weight: 800;
  @include fontsize(20);
}

%title_2 {
  font-weight: 800;
  @include fontsize(15);
}

%title_3 {
  font-weight: 700;
  @include fontsize(15);
}

%title_4 {
  font-weight: 700;
  @include fontsize(13);
}

%heading {
  font-weight: 700;
  @include fontsize(11);
}

%caption_heading {
  font-weight: 700;
  @include fontsize(9);
}

%caption {
  font-weight: 400;
  @include fontsize(9);
}

%smaller {
  font-weight: 400;
  @include fontsize(8);
}

%monospace {font-family: monospace;}
%numeric { font-feature-settings: "tnum";}