Tables in HTML can have horizontal as well as the vertical header. For the horizontal header, you need to set all <th> inside a single <tr> tag i.e. row, that will be the topmost.
Example
You can try to run the following code to set a horizontal header for a table
<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
border: 1px solid black;
width: 100px;
height: 50px;
}
</style>
</head>
<body>
<h1>Employee Details</h1>
<table>
<tr>
<th>Name</th>
<th>Age</th>
<th>Technology</th>
</tr>
<tr>
<td>Amit</td>
<td>27</td>
<td>Database</td>
</tr>
<tr>
<td>Sachin</td>
<td>34</td>
<td>Marketing</td>
</tr>
</table>
</body>
</html>Output
