Offset left and right Cover block styles

cover-offset-styles.php

<?php

add_action( 'init', function() {
	
	register_block_style( 'core/cover', [
		'name'  => 'offset-left',
		'label' => __( 'Offset Left' ),
		'inline_style' =>
			'.wp-block-cover.is-style-offset-left > .wp-block-cover__inner-container {
				background-color: inherit;
				color: inherit;
				padding: inherit;
			}

			@media ( min-width: 768px ) {
				.wp-block-cover.is-style-offset-left > .wp-block-cover__inner-container {
					width: 75%;
					margin-left: -75%;
				}
			}'
	] );

	register_block_style( 'core/cover', [
		'name'  => 'offset-right',
		'label' => __( 'Offset Right' ),
		'inline_style' =>
			'.wp-block-cover.is-style-offset-right > .wp-block-cover__inner-container {
				background-color: inherit;
				color: inherit;
				padding: inherit;
			}

			@media ( min-width: 768px ) {
				.wp-block-cover.is-style-offset-right > .wp-block-cover__inner-container {
					width: 75%;
					margin-right: -75%;
				}
			}'
	] );
} );