如何把custom form 7添加到wordpress每个页面

<?php echo do_shortcode( ' [contact-form-7 id="xx" title="mytitle"] ' ); ?>

add_action( 'ampforwp_after_post_content', 'my_amp_post_before_footer' ); 
function my_amp_post_before_footer( $amp_post ) {
 ?>
   <div class='mypostioning'> 
     <?php echo do_shortcode( ' [contact-form-7 id="xx" title="mytitle"] ' ); ?>
  </div>
}

add_action( 'amp_post_template_css', 'my_contact-form_css' );
function my_contact-form_css( $amp_template ) {
    ?>
    
    . mypostioning{
        margin: 0 5px;padding: etc
    }
    .bla{
        margin: 0 5px;
    }
    .bla bla{ 
        border-top:1px solid #ddd;
        margin-bottom:0px;
    }

   contact form 7 css etc etc etc

    <?php
}