我想做什么
我想使用thead th {poistion: sticky; top: 0}。但是doesn't work与overflow: scroll。我的表内容非常广泛，所以我需要某种滚动。相反，我删除了overflow: scroll并计划使用本机窗口滚动。
问题
这很好用，标题实际上很粘。但是，在向右滚动时，页眉和页脚保持左对齐。这是有道理的，因为我希望它能做到这一点。但是当有人横向滚动时，它会使我的页面看起来很难看。
以下是
的示例
header {
background: red;
padding: 20px;
}
footer {
background: blue;
padding: 20px;
}
table th {
position: sticky;
top: 0;
}<header>
<nav>Navigation and Header</nav>
</header>
<main>
<table>
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
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<td>50</td>
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<td>50</td>
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<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
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<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
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<td>Smith</td>
<td>50</td>
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<td>Smith</td>
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<td>50</td>
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<td>50</td>
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<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
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<td>50</td>
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<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
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<td>Smith</td>
<td>50</td>
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<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
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<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
</table>
</main>
<footer>
Footer
</footer>
我想要的是
如您所见，标题保持原样。我想做的是至少将页眉和页脚的背景一直延伸到右边。我不介意内容是否仍在左侧，但背景设置为白色，这真的很难看。
有没有办法用CSS Grid做到这一点？
答案 0 :(得分：2)
我想做的是至少将页眉和页脚的背景一直延伸到右边。
只需将display: grid声明应用于body元素，即可实现此目的。
body元素的子元素没有空间可以水平共享空间，因此这些元素将自动流入一个列，它们共享相同的宽度。
body {
display: grid;
}
header {
background: red;
padding: 20px;
}
footer {
background: blue;
padding: 20px;
}
table th {
position: sticky;
top: 0;
}<header>
<nav>Navigation and Header</nav>
</header>
<main>
<table>
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
<th>Firstname</th>
<th>Lastname</th>
<th>Age</th>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
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<td>50</td>
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<td>50</td>
</tr>
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<td>Jill</td>
<td>Smith</td>
<td>50</td>
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<td>50</td>
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<td>50</td>
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<td>50</td>
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<td>50</td>
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<td>Jill</td>
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<td>50</td>
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<td>50</td>
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<td>50</td>
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<td>50</td>
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<td>50</td>
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<td>50</td>
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<td>50</td>
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<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
<tr>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
<td>Jill</td>
<td>Smith</td>
<td>50</td>
</tr>
</table>
</main>
<footer>
Footer
</footer>