in common/app/views/support/HtmlCleaner.scala [197:207]
def findBreakpointWidths(figure: Element): ContentHinting = {
figure.classNames().asScala.map(Some(_)) match {
case classes if classes.asJava.contains(Supporting.className) => Supporting
case classes if classes.asJava.contains(Showcase.className) => Showcase
case classes if classes.asJava.contains(Thumbnail.className) => Thumbnail
case classes if classes.asJava.contains(Immersive.className) => Immersive
case classes if classes.asJava.contains(Halfwidth.className) => Halfwidth
case _ => Inline
}
}