为什么我的桌子没有正确的边框间距？

Question

我试图让我的表看起来像这样：

到目前为止，一切看起来都很棒，但是我的边框间距有问题，没有任何原因，如下所示：

到目前为止，我的css中有边框间距，但它没有做任何事情，我不确定为什么会这样。

HTML：

<section class="s">
    <center>
        <table class="t">
            <caption class="ex2">HTML Table with CSS</caption>
            <tr>
                <td class="r1c1">This</td>
                <td class="r1c2">Little</td>
                <td class="r1c3">Piggy</td>
                <td class="r1c4">Went</td>
                <td class="r1c5">To</td>
                <td class="r1c6">Market</td>
            </tr>

            <tr>
                <td class="r2c1" colspan="2">This</td>
                <td class="r2c2">Little</td>
                <td class="r2c3">Piggy</td>
                <td class="r2c4">Went</td>
                <td class="r2c5">To</td>

            </tr>

            <tr>
                <td class="r3c1" colspan="2" rowspan="2">This</td>
                <td class="r3c2" rowspan="2">Little</td>
                <td class="r3c3">Piggy</td>
                <td class="r3c5" rowspan="2">To</td>
                <td class="r3c6" rowspan="2">Market</td>
            </tr>

            <tr> 
                <td class="r3c4">Went</td>
            </tr>

            <tr>
                <td class="r4c1">Little</td>
                <td class="r4c2">Piggy</td>
                <td class="r4c4">Went</td>
                <td class="r4c5">To</td>
                <td class="r4c5" colspan="2">Market</td>
            </tr>
        </table>
    </center>
</section>

CSS：

table.t
{
    border: 1px solid;
    border-spacing: 30px;
    text-align: center;
}

td.r1c1 { border: 1px solid; background-color: #6DFFA8; }
td.r1c2 { border: 1px solid; background-color: #6DFFCC; }
td.r1c3 { border: 1px solid; background-color: #6DFFFF; }
td.r1c4 { border: 1px solid; background-color: #70E8FF; }
td.r1c5 { border: 1px solid; background-color: #74CEFF; }
td.r1c6 { border: 1px solid; background-color: #78BAFF; }

td.r2c1 { border: 1px solid; background-color: #6DFFA8; }
td.r2c2 { border: 1px solid; background-color: #33FAB4; }
td.r2c3 { border: 1px solid; background-color: #33F9D8; }
td.r2c4 { border: 1px solid; background-color: #34F0F9; }
td.r2c5 { border: 1px solid; background-color: #3CBCF9; }

td.r3c1 { border: 1px solid; background-color: #6DFFA8; }
td.r3c2 { border: 1px solid; background-color: #00F9F9; }
td.r3c3 { border: 1px solid; background-color: #1094FA; }
td.r3c4 { border: 1px solid; background-color: #1A5EFA; }
td.r3c5 { border: 1px solid; background-color: #242AFA; }
td.r3c6 { border: 1px solid; background-color: #511CFA; }

td.r4c1 { border: 1px solid; background-color: #6DFFA8; }
td.r4c2 { border: 1px solid; background-color: #00D67B; }
td.r4c3 { border: 1px solid; background-color: #00CBCB; }
td.r4c4 { border: 1px solid; background-color: #0E7CD1; }
td.r4c5 { border: 1px solid; background-color: #1750D4; }

Answer 1

border-collapse:separate;表格规则缺少border-spacing才能正常使用

table.t
{
    border-collapse:separate;
}