Use the expression max-width: 480px in a media query to target devices with screens up to 480 pixels in width.
Media queries are a characteristic of CSS 3 allowing content rendering to adapt to various conditions such as screen resolution. It became a W3C recommended standard in June 2012 and exists as a cornerstone technology of responsive web design.
Media queries exist as a key part of responsive web design, as they permit you to create different layouts depending on the size of the viewport, but they can also be utilized to detect other things about the environment your site is running on, for example, whether the user exists using a touchscreen rather than a mouse.
Hence, Use the expression max-width: 480px in a media query to target devices with screens up to 480 pixels in width.
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