WP snippets for CSS Naked Day

naked-css-wp.php

<?php

function bk_is_naked_day($d) {
  $start = date('U', mktime(-12, 0, 0, 04, $d, date('Y')));
  $end = date('U', mktime(36, 0, 0, 04, $d, date('Y')));
  $z = date('Z') * -1;
  $now = time() + $z; 
  if ( $now >= $start && $now <= $end ) {
    return true;
  }
  return false;
}
 
function bk_remove_all_css(){
    global $wp_styles;
    if ( bk_is_naked_day( 9 ) ) {
        $wp_styles->queue = array();
    }
}
 
add_action( 'wp_print_styles', 'bk_remove_all_css', 99 );
 
function bk_announce_naked_day() {
 
    if ( bk_is_naked_day( 9 ) ) {
    echo "<p><i>🔥 Why does my website look so <strong>naked</strong>? April 9th is <a href='https://css-naked-day.github.io/'>CSS naked day</a>.  I'm participating to help promote web standards, including the proper use of HTML, semantic markup and more. I'm also using it as an opportunity to find out where I can improve the HTML on the site.</i></p>";
    }
}
 
add_action( 'wp_body_open', 'bk_announce_naked_day' );