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Hi, thanks for your great job!

Unfortunaly, i’ve some problem to adds this code :

add_action( 'amp_post_template_css', 'xyz_amp_additional_css_styles' );

function xyz_amp_additional_css_styles( $amp_template ) {
	// only CSS here please...
	?>
	nav.amp-wp-title-bar {
		padding: 12px 0;
		background: #000;
	}
	nav.amp-wp-title-bar a {
		background-image: url( 'https://example.com/path/to/logo.png' );
		background-repeat: no-repeat;
		background-size: contain;
		display: block;
		height: 28px;
		width: 94px;
		margin: 0 auto;
		text-indent: -9999px;
	}
	<?php
}

I’ll already child theme and adds code on my functions.php but nothings change…

Maybee, you’ll can tell me whats wrong?

Thanks in advance