<style type="text/css">.t1{width: 500px;border:1px solid pink;border-collapse: collapse;}</style><div contenteditable="true" style=" border: 1px solid black"> <table class="t1" > <caption> <b>疯狂java讲义系列</b> </caption> <tr> <td>疯狂java讲义</td> <td>疯狂Android讲义</td> </tr> <tr> <td>疯狂HTML讲义</td> <td>疯狂AJAX讲义</td> </tr> </table> </div>