Images still not centered

It’s now working for me. https://blog.markheadrick.com/2018/09/06/gutenberg-3-70-centered-image-test/

On your page, the following CSS is causing the issue:

.main .aligncenter, .main img.aligncenter {
	display: block;
	clear: both;
	margin-right: auto;
	margin-left: auto;
}

Need to get rid of that display:block to center that middle image or change it to display:table.

Same problem here. The photo is not aligned to the center no matter what I do. https://www.writersblockg.com/%D7%90%D7%9D-%D7%90%D7%99%D7%9F-%D7%90%D7%A0%D7%99-%D7%9C%D7%99-%D7%90%D7%A0%D7%99-%D7%9C%D7%99%D7%90%D7%95%D7%A0%D7%94-%D7%A2%D7%9D-%D7%A7%D7%A6%D7%AA-%D7%91%D7%99%D7%A7%D7%95%D7%A8%D7%AA/

If you’re talking about that image nearer the bottom of the page.. looks like some Elementor CSS is interfering:

.elementor .elementor-widget:not(.elementor-widget-text-editor) figure {
	margin: 0;
}

Get rid of that or change it to margin: auto then image becomes centered. It’s overriding the CSS that would center the image. In this specific case not Gutenberg’s fault.