This is the way if you want to get the image URL with the associated image style for any image field in a twig template:

First install the [Twig Tweak module][1]

Then set the image URI as a variable.
With the URI, you can use a twig tweaks pattern to get the path with whatever image style you want. See below:

    {% set image_uri = content.field_feature_row_image['#items'].entity.uri.value %}

    <img src="{{ image_uri|image_style('image1200x1103') }}"/>

Twig Tweak v2.4+ offers `file_url` filter to extract file URL from an entity.

    <img src="{{ node.field_image|file_url|image_style('image1200x1103') }}"/>


  [1]: https://www.drupal.org/project/twig_tweak