styles/sass/variables/_typography.scss
// variables/typography.scss
// -----------------------------------------------------
$baseFontSize: 13px;
$baseFontFamily: "Roboto", Helvetica, Arial, sans-serif;
$baseLineHeight: 18px;
$altFontFamily: Georgia, "Times New Roman", Times, serif;
$headingsFontFamily: inherit; // empty to use BS default, $baseFontFamily
$headingsFontWeight: bold; // instead of browser default, bold