html - 如何使用 rowspan 覆盖单元格的 1.5 倍？

Question

此代码不会使最后 2 个单元格覆盖 3 个三行。我该如何解决？
这是代码:

        <table border="2">
			<tr>
				<th rowspan="3">Day</th>
				<th colspan="3">Seminar</th>
			</tr>
			<tr>
				<th colspan="2">Schedule</th>
				<th rowspan="2">Topic</th>
			</tr>
			<tr><th>Begin</th><th>End</th></tr>
			<tr>
				<td rowspan="2">Monday</td>
				<td rowspan="2">8:00 a.m.</td>
				<td rowspan="2">5:00 p.m.</td>
				<td>Introduction to XML</td>
			</tr>
			<tr><td>Validity:DTD and Relax NG</td></tr>
			<tr>
				<td rowspan="3">Tuesday</td>
				<td>8:00 a.m.</td>
				<td>11:00 a.m.</td>
				<td rowspan="1.5">XPath</td>
			</tr>
			<tr>
				<td>11 a.m.</td>
				<td>2:00 p.m.</td>
			</tr>
			<tr>
				<td>2:00 p.m.</td>
				<td>5:00 p.m.</td>
				<td rowspan="1.5">XSL Transformations</td>
			</tr>
		</table>

rowspan 不允许 1.5。如何在不将所有行和列加倍的情况下做到这一点？

Answer 1

我试过这个例子，这是我的版本:

<table width="500px" border="1" cellpadding="0" cellspacing="2px" style="text-align: center;">
<tr>
  <td rowspan="3">DAY</td>
  <td colspan="3">SEMINAR</td>
</tr>
<tr>
  <td colspan="2">SHEDULE</td>
  <td rowspan="2">TOPIC</td>
</tr>
<tr>
  <td>BEGIN</td>
  <td>END</td>
</tr>
<tr>
  <td rowspan="2">Monday</td>
  <td rowspan="2">8:00 am</td>
  <td rowspan="2">5:00 am</td>
  <td>Introduction to xml</td>
</tr>
<tr>
  <td>Validaty: DTD and Relax NG</td>
</tr>
<tr>
  <td rowspan="5">Tuesday</td>
  <td rowspan="2">8:00 am</td>
  <td rowspan="2">11:00 am</td>
  <td rowspan="3">XPath</td>
</tr>
<tr></tr>
<tr>
  <td rowspan="2">11:00 am</td>
  <td rowspan="2">2:00 pm</td>
</tr>
<tr>
  <td rowspan="2">XSL transformations</td>
</tr>
<tr>
  <td>2:00 pm</td>
  <td>5:00 pm</td>
</tr>
<tr>
  <td>Wensday</td>
  <td>8:00 am</td>
  <td>12:00 pm</td>
  <td>XSL Formatting Objects</td>
</tr>

预览 here