Enqueue Front-End Styles For Custom Block

front-end-assets.php

<?php
function organic_profile_block_block_assets() {
	// Styles.
	wp_enqueue_style(
		'organic-profile-block-frontend', // Handle.
		plugins_url( 'style.css', __FILE__ ), // Block frontend CSS.
		array( 'wp-blocks' ), // Dependency to include the CSS after it.
		filemtime( plugin_dir_path( __FILE__ ) . 'style.css' ) // filemtime — Gets file modification time.
	);
	wp_enqueue_style(
		'organic-profile-block-fontawesome', // Handle.
		plugins_url( 'font-awesome.css', __FILE__ ) // Font Awesome for social media icons.
	);
} // End function organic_profile_block_block_assets().

// Hook: Frontend assets.
add_action( 'enqueue_block_assets', 'organic_profile_block_block_assets' );