Hi Linh,

Thank you for purchasing our theme.

In order to use child theme, please refer to the following article: I want to use a child theme. How can I do that?

Also, make sure to add the functions.php file, with the following code:

<?php
function theme_enqueue_styles() {
    $parent_style = 'parent-style';
    wp_enqueue_style( $parent_style, get_template_directory_uri() . '/style.crush.css' );
    wp_enqueue_style( 'child-style',
        get_stylesheet_directory_uri() . '/style.css',
        array( $parent_style )
    );
}
add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );
?>

Should you need additional help, let us know.

Hi Tyler,

We replied in your other tickets.