[1] Issue 274055 - chromium - Remove prefixed marquee properties - An open-source project to help move the web forward. - Google Project Hosting ( ( 版)) <https://code.google.com/p/chromium/issues/detail?id=274055>
[2] Intent to remove: overflow: -webkit-marquee - Google グループ ( ( 版)) <https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/HSiFTKnMy4Q>
[3] Chrome はもう overflow: -webkit-marquee を実装していません。