themes-wordpress/spearhead/assets/sass/_breakpoints.scss

/**
 * Required Variables
 */
 $default_width: 782px;
 $alignwide_width: 1247px;
 $breakpoint_sm: 482px;
 $breakpoint_md: 592px;
 $breakpoint_lg: 830px; // default width + the margins
 $breakpoint_xl: 1295px; // wide width + the margins
 $breakpoint_xxl: 1440px;