Replaces style.css as default style sheet with genesis.css. Adds custom.css for child theme customizations.

custom-css.php

add_action( 'wp_enqueue_scripts', 'custom_load_custom_style_sheet' );
function custom_load_custom_style_sheet() {
  wp_enqueue_style( 'custom-stylesheet', CHILD_URL . '/css/custom.css', array(), CHILD_THEME_VERSION );
}

//* Replace default style sheet
add_filter( 'stylesheet_uri', 'custom_replace_default_style_sheet', 10, 2 );
function custom_replace_default_style_sheet() {
	return CHILD_URL . '/css/genesis.css';
}