How to edit HTML Table Column Width

To set the size of a specific column, add the style attribute on a <th> or <td> element:

Example of HTML Table Column Width

 <table style="width:100%"> <tr> <th style="width:70%">Firstname</th> <th>Lastname</th> <th>Age</th> </tr> <tr> <td>Jill</td> <td>Smith</td> <td>50</td> </tr> <tr> <td>Eve</td> <td>Jackson</td> <td>94</td> </tr>
</table>

Full Example of HTML Table Column Width

Set the width of the first column to 70%:

index.html

Example: HTML

<!DOCTYPE html>
<html>
<style>
table, th, td { border:1px solid black; border-collapse: collapse;
}
</style>
<body>
<h2>Set the first column to 70% of the table width</h2>
<table style="width:100%"> <tr> <th style="width:70%">Firstname</th> <th>Lastname</th> <th>Age</th> </tr> <tr> <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>

Output should be:

Category :	Web Tutorial
Sub Category :	HTML Table Sizes
Uploaded by :	Admin

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