Standard Width

There is no single "standard" CSS screen width, as modern web design is responsive and must adapt to a vast array of device sizes, from small smartphones to large 4K monitors. Instead of a fixed width, developers use breakpoints to adjust layouts for general categories of screen sizes.

Common CSS Breakpoints

These are widely used breakpoints for different device categories, often following a "mobile-first" approach where the base styles are for the smallest screens and media queries are used to add styles for larger screens: