## What is “@media only screen”?
`@media only screen` is an At-rule in CSS (Cascading Style Sheets) that is used to specify which styles should be applied depending on the characteristics of a device used to access a website. It modifies how a website looks when different devices such as smartphones, laptops or desktops view it.
To put it simply, `@media only screen` allows web authors to create styles based on certain device characteristics, including screen sizes and widths, display resolution and color requirements. This type of styling gives web authors the ability to make sure their content looks good no matter what device someone views it on.
## How Does “@media Only Screen” Work?
`@media only screen` works by allowing web authors to use media queries to define different style rules depending on the device being used to view their website.
Media queries are conditions that are set to determine which styles should be applied. These are based on criteria such as the width of the device or the size of the display. That way, web authors can make sure that the layout of their website looks great no matter what device someone is using to view it.
Here’s an example of what a media query might look like:
“`
@media only screen (max-width: 400px) {
body {
font-size: 16px;
}
}
“`
In the example above, the media query is set up to apply different font sizes based on the maximum width of the device. If the width of the device is 400px or less, it will apply the font size of 16px.
## Benefits of “@media Only Screen”
There are a few major benefits to using `@media only screen`.
1. **Improved User Experience:** The entire point of `@media only screen` is to make sure every user, no matter what kind of device they are using, has an optimal experience when viewing a website.
2. **Responsive Design:** `@media only screen` allows web authors to create designs that respond to different device widths, giving websites a much more professional look and feel.
3. **Flexibility:** `@media only screen` offers web authors a lot of flexibility when it comes to design and styling. They can create different styles for different devices, giving them the ability to create an aesthetically pleasing website no matter what device is being used to view it.
## Summary
`@media only screen` is an At-rule in CSS that allows web authors to create styles based on certain device characteristics, including screen sizes and widths, display resolution and color requirements. It’s a great way to ensure that your website looks great no matter what device someone is using to view it, making for an optimal user experience.

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