xxxxxxxxxx<html> <head> <link type="text/css" rel="stylesheet" href="stylesheet.css"/> <title></title> <style id="jsbin-css">/*Add your CSS below!*/td{ height:50px; border:1px dashed blue;}table{ border:1px solid black;}</style></head> <body> <table> <thead> <th colspan="3">Nine Blocks!</th> </thead> <tbody> <tr> <td></td> <td></td> <td></td> </tr> <tr> <td></td> <td></td> <td></td> </tr> <tr> <td></td> <td></td> <td></td> </tr> </tbody> </table> <script id="jsbin-source-css" type="text/css">/*Add your CSS below!*/td{ height:50px; border:1px dashed blue;}table{ border:1px solid black;}</script></body></html>