重叠的表格元素左右边框

Question

我想将表格第一行中的每个元素设置为具有特定颜色的左边框和特定颜色的右边框.不幸的是,看起来相邻表格单元格的边框重叠,我只显示左边框颜色.左边界应为浅灰色,右边为深灰色.

这是我生成表格的HTML.(HTML在cherrypy中生成)

<th id="tbl_head" colspan='4'>%s</th>
    <tr>
        <td id="colhead">Track</td>
        <td id="colhead">Artist</td>
        <td id="colhead_time">Time</td>
        <td id="colhead">Album</td>
    </tr>

这是我的CSS:

table {
    font-family: verdana,arial,sans-serif;
    font-size:11px;
    margin-left: auto;
    margin-right: auto;
    border-width: 1px;
    border-collapse: collapse;
}

td {
    padding: 3px;
}

#colhead {
    font-weight: bold;
    text-align: left;
    background-color: #989898;
    color: #000000;

    border-left-color:   #aeaeae;
    border-left-style: solid;
    border-left-width: 2px;

    border-right-color: #6c6c6c;    
    border-right-style: solid;
    border-right-width: 1px;

}

#colhead_time {
    font-weight: bold;
    text-align: right;
    background-color: #989898;
    color: #000000;

    border-left-color:   #aeaeae;
    border-left-style: solid;
    border-left-width: 2px;

    border-right-color: #6c6c6c;    
    border-right-style: solid;
    border-right-width: 1px;

}

Answer 1

在tableCSS 上使用以下属性.

border-collapse: separate;
border-spacing: 0px;

table {
  font-family: verdana, arial, sans-serif;
  font-size: 11px;
  margin-left: auto;
  margin-right: auto;
  border-width: 1px;
  border-collapse: separate;
  border-spacing: 0px;
}
td {
  padding: 3px;
}
#colhead {
  font-weight: bold;
  text-align: left;
  background-color: #989898;
  color: #000000;
  border-left-color: red;
  border-left-style: solid;
  border-left-width: 2px;
  border-right-color: blue;
  border-right-style: solid;
  border-right-width: 1px;
}
#colhead_time {
  font-weight: bold;
  text-align: right;
  background-color: #989898;
  color: #000000;
  border-left-color: red;
  border-left-style: solid;
  border-left-width: 2px;
  border-right-color: blue;
  border-right-style: solid;
  border-right-width: 1px;
}

<table>
  <th id="tbl_head" colspan='4'>%s</th>
  <tr>
    <td id="colhead">Track</td>
    <td id="colhead">Artist</td>
    <td id="colhead_time">Time</td>
    <td id="colhead">Album</td>
  </tr>
</table>

小提琴演示