How To Add Custom Css/js To Just One Page In Wordpress?

I made a separate html file with custom css and js files. I want to integrate it into a wordpress site. I can copy and paste the body part of the html, however I don't know how to

Solution 1:

When you will add the page from the WordPress back end, using Pages->Add new from the menu, you have to give a title and using that title (also possible using slug and id) you can check is_page('page title here') and then can add JavaScript and css files, like

add_action( 'wp_enqueue_scripts', 'addcssAndScripts');
function addcssAndScripts()
{
    if ( is_page('page-title') )
    {
        wp_enqueue_script( 'your_script' );
        wp_enqueue_style( 'your-style' );
    }
}

paste this code in your functions.php and check wp_enqueue_style and wp_enqueue_script for better understanding of these functions and usage, also is_page and wp_enqueue_scripts if needed.