<!DOCTYPE html>
<html>
<style>
table, th, td { border:1px solid black; border-collapse: collapse;
}
</style>
<body>
<h2>Set the height of the second row to 200 pixels</h2>
<table style="width:100%"> <tr> <th>Firstname</th> <th>Lastname</th> <th>Age</th> </tr> <tr style="height:200px"> <td>Jill</td> <td>Smith</td> <td>50</td> </tr> <tr> <td>Eve</td> <td>Jackson</td> <td>94</td> </tr> <tr> <td>John</td> <td>Doe</td> <td>80</td> </tr>
</table>
</body>
</html>