text: angular.module('app').directive('backImg', function() {
    return function(scope, element, attrs) {
      attrs.$observe('backImg', function(value) {
        element.css({
          'background-image': 'url(' + value + ')',
          'background-size': 'contain',
          'background-repeat': 'no-repeat'
        });
      });
    };
  });
  