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Otra forma de jalar una imagen
$category = get_page(37);
$images = get_the_post_thumbnail($category->ID, 'thumb-image' );

//Para registrar los tamaños de los thumbnails, esto va en functions.php

add_theme_support( 'post-thumbnails' );
add_image_size( 'thumb-image', 800, 500, true );
add_image_size( 'thumb-image-small', 100, 100, true );


//hacer imagenes dinamicas

<div class="view overlay hm-white-slight">
  <?php
    if(has_post_thumbnail()){ the_post_thumbnail('thumb-image');}
  ?>
  <a>
      <div class="mask"></div>
  </a>
</div>