Google Slides has built-in slides, to which users can add their designs. Google Slide users can change the font, font color, and background of the Slide. They can also change the theme of the slide.
Twitter's web interface is getting a new design that replaces the three-column layout with two columns. Other updates are also coming, though these are available only to a small set of users for now.
This layout creates two columns. The left column is 1/3 of the content area and the right column is 2/3 of the content area. Vestibulum eget suscipit nisl. Sed malesuada eu nisi euismod cursus.