La balise meta viewport:
<meta name="viewport" content="width=device-width, initial-scale=1.0">source:(balise meta )
image à la une
source: codex image à la une
<?php// Must be inside a loop.if ( has_post_thumbnail() ) { the_post_thumbnail();}else { echo '<img src="' . get_bloginfo( 'stylesheet_directory' ) . '/images/thumbnail-default.jpg" />';}?>
