Simpify adding CSS classes to product image + Also make this template more like image_with_borders.phtml where the getClass() method is used and not here.

Author: woutersamaey

app/code/Magento/Catalog/view/frontend/templates/product/image.phtml

@@ -6,7 +6,7 @@
 ?>
 <?php /** @var $block \Magento\Catalog\Block\Product\Image */ ?>
 
-<img class="photo image"
+<img class="photo image <?= $block->escapeHtmlAttr($block->getClass()) ?>"
     <?= $block->escapeHtml($block->getCustomAttributes()) ?>
     src="<?= $block->escapeUrl($block->getImageUrl()) ?>"
     width="<?= $block->escapeHtmlAttr($block->getWidth()) ?>"