Gallery Block Fix in WordPress 5.3+

WordPress 5.3 modified the coding for the Gutenberg Image Gallery Block. The modification has caused the Gallery Block to display off to the right (left indentation) in some of our themes.

To fix this, copy the code snippet below and paste it at WordPress > Appearance > Customize > Additional CSS.

ul.blocks-gallery-grid {
	margin-left: 0 !important; }