display:block;でセルを横並びにしたい display:block; td2td3 **HTML** <td> <table> <thead> <tr> <th id="th1">1</th> <th id="th2">2</th> <th id="th3">3</th> <th id="th4">4</th> </tr> </thead> <tr> <td class = "td1">aaa</td> <td class = "td2">bbb</td> <td class = "td2">bbb</td> <td class = "td2">bbb</td> <td class = "td3">ccc</td> <td class = "td3">ccc</td> <td class = "td3">ccc</td> <td class = "td4">ddd</td> </tr> **CSS** td.td2{display:block;} td.td3{display:block;} ![]( [] rowspanaaaccc cccbbb **HTML** <table border="3"> <tr> <td rowspan="3">aaa</td> <td>bbb</td> </tr> <tr> <td>bbb</td> </tr> <tr> <td>bbb</td> </tr> <tr> <td>ccc</td> </tr> <tr> <td>ccc</td> </tr> <tr> <td>ccc</td> </tr> </table> ![](