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<!DOCTYPE html> <html> <head> <style> table, td { border: 1px solid black; } #myTABLE { width: 100%; } </style> </head> <body> <p>Click the "Try it" button to set table-layout property of the TABLE to "fixed":</p> <button onclick="myFunction()">Try it</button> <table id="myTABLE"> <tr> <td>1000000000000000000000000000</td> <td>10000000</td> </tr> <tr> <td>John</td> <td>Smith</td> </tr> <tr> <td>Jane</td> <td>Doe</td> </tr> </table> <script> function myFunction() { document.getElementById("myTABLE").style.tableLayout = "fixed"; } </script> </body> </html>