Image Page Align Center
In contentr setup: Click the Image icon on the button bar. Select the image to upload, it will be centered on page. Click the image in the editor, Right-Click Image Icon, then select up to 100% for width. You can fine tune centering with the Paragraph Formats Icon.
Upload two images. Right-Click an image. Change Width to 48% or less for each images You can fine tune centering with the Paragraph Formats | Align Left or Align Right and then the Right or Left to appear side by side as below.
More views of Chicago skyscrapers.