Unfortunately, most of the work we’ve done on this layout is just an illustration of what’s possible—not a demonstration of how you should actually use flexible box layout today. In IE, Opera, and other browsers that don’t support it, the layout looks like a broken mess (Figure 7.19). This is not like using border-radius and having rounded corners not show up in IE; here, the CSS3 properties we’re using affect the layout of the whole page and are more than simple decorative effects.