1/ Theme Options > Header builder > Main menu > Computed Box For The Menu Item > set 30px padding top and bottom
2/ Read this article – https://xstore.helpscoutdocs.com/article/89-product-images , set size, and re-generate thumbnails using the plugin.
It is recommended to use a graphics editor and prepare product images (make them the same size) before uploading images to your media gallery.
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