<!DOCTYPE HTML> <html> <head> <title>default box sizing (border-collapse: separate, standards mode)</title> <style type="text/css"> body > div { float: left; clear: left; background: fuchsia; margin: 2px 0; padding: 10px; } table { border-collapse: collapse; border-spacing: 5px 3px; padding: 2px 3px 4px 5px; border: medium solid blue; border-width: 2px 4px 6px 8px; } td { border: medium solid aqua; border-width: 2px 4px 6px 8px; padding: 5px 7px 9px 11px; } div.inner { background: yellow; } </style> </head> <body> <div style="padding: 10px"> <div style="background: aqua; padding: 1px 2px 3px 4px"> <div style="width: 200px; padding: 1px 2px 3px 4px"> <div style="background: fuchsia; padding: 5px 7px 9px 11px"> <div class="inner">x</div> </div> </div> </div> </div> <div style="padding: 10px"> <div style="background: aqua; padding: 1px 2px 3px 4px"> <div style="padding: 1px 2px 3px 4px"> <div style="background: fuchsia; padding: 5px 7px 9px 11px"> <div class="inner" style="width: 200px">x</div> </div> </div> </div> </div> </body> </html>