Константин Вархола

add_filter('single_template', create_function(
	'$the_template',
	'foreach( (array) get_the_category() as $cat ) {
		if ( file_exists(TEMPLATEPATH . "/single-{$cat->slug}.php") )
		return TEMPLATEPATH . "/single-{$cat->slug}.php"; }
	return $the_template;' )
);

.item {
  position: relative;
  overflow:  hidden;
  height: 300px;
}

.item img {
  position: absolute;
  left: -50%;
  top: -50%;
  bottom: -50%;
  right: -50%;
  margin: auto;
}

.clearfix {
  display: flex;
}

.item {
  display: flex;
  align-items: center;
}