keyboard.\n// This prevents an unwanted focus outline from appearing around elements that\n// might still respond to pointer events.\n//\n// Credit: https://github.com/suitcss/base\n[tabindex=\"-1\"]:focus {\n  outline: 0 !important;\n}\n\n\n// Content grouping\n//\n// 1. Add the correct box sizing in Firefox.\n// 2. Show the overflow in Edge and IE.\n\nhr {\n  box-sizing: content-box; // 1\n  height: 0; // 1\n  overflow: visible; // 2\n}\n\n\n//\n// Typography\n//\n\n// Remove top margins from headings\n//\n//...