<!DOCTYPE html> <html> <head> <style> td { width: 20px; height: 20px; background-color: green; } table { border-collapse:separate; border-spacing: 0px; } </style> </head> <body> <table> <tr> <td></td> <td style="background-color: blue"></td> <tr> <td></td> <td></td> </tr> </table> </body> </html>
