html表格内容不显示
如图所示
这是代码 ？111 222 333无法显示
<style>
tr {
height: 40px;
vertical-align: middle;
}
</style>
<body>
<div id="main">
<div id="count" style="margin-left: 20px; margin-right: 20px">
<table class="table table-hover text-center">
<tr>
<th style="width: 10%;"></th>
<th style="width: 30%; font-size: 18px">test</th>
<th style="width: 30%; font-size: 18px">validation</th>
<th style="width: 30%; font-size: 18px">train</th>
</tr>
<tr>
<td style="width: 10%;">?</td>
<td style="width: 30%;">111</td>
<td style="width: 30%;">222</td>
<td style="width: 30%;">333</td>
</tr>
</table>
</div>
</div>
</body>
