[1] [css-display] Define interaction of display:contents and replaced elements · Issue #540 · w3c/csswg-drafts () <https://github.com/w3c/csswg-drafts/issues/540>
[2] SVG and CSS display:contents · Issue #305 · w3c/svgwg () <https://github.com/w3c/svgwg/issues/305>
[3] New in Chrome 65 | Web | Google Developers () <https://developers.google.com/web/updates/2018/03/nic65>
[4] [css-display] More thoroughly review the list of SVG elements and put… (tabatkins著, ) <https://github.com/w3c/csswg-drafts/commit/1432231d5b5561e6ce030850d4e614ba85913b1e>