This is one of the most wanted hacks that users want to know how to accomplish. First you need to learn how to create a custom page. You will need to duplicate your page.php or create a brand new .php file and add the following code at the very top:
<?php /* Template Name: WPBeginner */ ?>
You can change the template name. Change any styling, that you want in that page. Go to your WordPress admin panel and create a new page and select this template.