WordPress Version: 5.8
/**
* Renders a 'viewport' meta tag.
*
* This is hooked into {@see 'wp_head'} to decouple its output from the default template canvas.
*
* @access private
* @since 5.8.0
*/
function _block_template_viewport_meta_tag()
{
echo '<meta name="viewport" content="width=device-width, initial-scale=1" />' . "\n";
}