一部のTD/TRのFirefoxの境界線が太っているのはなぜですか？

Question

Firefoxでは、なぜ一部の<td>と<tr>要素のボトムボーダーが太っていますか？ ChromeとOperaではうまく動作します。

table.mytable td { 
 
    border: 1px solid black; 
 
}

<table class="mytable"> 
 
    <tr> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
</table>

画像：最初後http://i.imgur.com/A1C7sWt.png

、第五及び第9のTR境界底が太っています。

タグテーブルで属性border = 1を使用すると、それは悪いこととして機能します。

編集：Firefoxでは100％サイズ/ズーム画面があります。

Answer 1

このスニペットを試してください。これがあなたに役立つことを願っています。私はおそらく、サブピクセルの問題（Windowsの-10）にのFirefoxに

table.mytable{ 
 
border-collapse: collapse; 
 
} 
 
table.mytable td { 
 
border: 1px solid black; \t 
 
}

<table class="mytable"> 
 
    <tr> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    <td>11111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
</tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
</tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
</tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
</tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
</tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    </tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
</tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
</tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
</tr> 
 
    <tr> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
    <td>111111</td> 
 
</tr> 
 
</table>