In the preceding screenshot, you may have noticed the link at the bottom of the window that allows you to define more details through the Prezi CSS editor. Don't worry if you're not familiar with CSS—we're going to walk through the basics together.
CSS stands for Cascading Style Sheets. It is a markup language that allows the style of a page to be coded separately from the content of the page. So, for example, one style sheet file can be applied to every page of a particular website.
Note
If a website does not use CSS and you decided to change a design element, such as the color used for headings, someone would need to edit the HTML code for each heading. However, if those headings were designed with reference to a style sheet, one would simply need to change a single line in the style sheet, and every heading on the site would automatically be updated. Style sheets make the design process easier and more flexible.