<!DOCTYPE html> <html> <body style="width: 0"> <span style="border: 2px solid blue; border-right: none"></span> <span style="display: block"></span> <span style="border: 2px solid blue; border-left: none; border-right: none"> a b </span> <span style="display: block"></span> <span style="border: 2px solid blue; border-left: none;"> c </span> </body> </html>