Css基本样式――――综合设计：表格的制作_html/css_WEB-ITnose

<table id="tb">    <tr>        <th>姓名</th>        <th>年龄</th>        <th>性别</th>    </tr>    <tr>        <td>小王</td>        <td>20</td>        <td>男</td>    </tr>    <tr class="alt">        <td>小王</td>        <td>20</td>        <td>男</td>    </tr>    <tr>        <td>小王</td>        <td>20</td>        <td>男</td>    </tr>    <tr class="alt">        <td>小王</td>        <td>20</td>        <td>男</td>    </tr></table>#tb{    border-collapse: collapse;    width: 500px;}#tb td,#tb th{    border: 1px solid bisque;    padding: 5px;}#tb th{    text-align: left;    background-color: aqua;    color: #ffffff;}#tb tr.alt td{    color: black;    background-color: aquamarine;}