1
请帮助我在加入多个html表时防止出现双边框。我试图使用“边界崩溃:崩溃”,但它不工作。两个表格之间的边界仍然是两倍。加入多个html表时防止出现双边框 - border-collapse不起作用
<table style="border:1px solid black;border-collapse:collapse;width:100%">
\t <tr>
\t \t <td rowspan="3">Heading-1</td>
\t \t <td>Heading-2</td>
\t \t <td>Heading-3</td>
\t </tr>
\t <tr>
\t \t <td>Heading-4</td>
\t \t <td>Heading-5</td>
\t </tr>
\t <tr>
\t \t <td>Heading-6</td>
\t \t <td>Heading-7</td>
\t </tr>
</table>
<table style="border:1px solid black;border-collapse:collapse;width:100%">
\t <tr>
\t \t <td rowspan="3">Heading-1</td>
\t \t <td>Heading-2</td>
\t \t <td>Heading-3</td>
\t </tr>
\t <tr>
\t \t <td>Heading-4</td>
\t \t <td>Heading-5</td>
\t </tr>
\t <tr>
\t \t <td>Heading-6</td>
\t \t <td>Heading-7</td>
\t </tr>
</table>
<table style="border:1px solid black;border-collapse:collapse;width:100%">
\t <tr>
\t \t <td rowspan="3">Heading-1</td>
\t \t <td>Heading-2</td>
\t \t <td>Heading-3</td>
\t </tr>
\t <tr>
\t \t <td>Heading-4</td>
\t \t <td>Heading-5</td>
\t </tr>
\t <tr>
\t \t <td>Heading-6</td>
\t \t <td>Heading-7</td>
\t </tr>
</table>