CSS in child theme isn’t working properly

You’ll have to enter that code at the start of the functions.php file in your child theme to include the parent theme’s style.css file

<?php
add_action( 'wp_enqueue_scripts', 'my_theme_enqueue_styles' );
function my_theme_enqueue_styles() {
    wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/style.css' );

}

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