CSS

Code used to style the visual look of web pages.

CSS is the language used to describe how HTML elements should be displayed on a webpage – things like colors, fonts, layouts, spacing, and responsiveness. It works alongside HTML (which provides the structure) and JavaScript (which adds interactivity). Understanding basic CSS is helpful for making visual changes in CRO.

Ready to Run Better Tests?

Put this knowledge into practice! Test It is the easiest and most affordable way to run A/B tests. Get started for free.

Try Test It Now