Blame Safari. The standard includes the `is` attribute, it's supported by all browsers except Safari, but Safari not only hasn't worked on supporting it, they'v

Blame Safari. The standard includes the `is` attribute, it's supported by all browsers except Safari, but Safari not only hasn't worked on supporting it, they've stated they won't do so. https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/is https://developer.mozilla.org/en-US/docs/Web/HTML/Global_att...