CSS3 is an abbreviation of Cascading Style Sheets level 3. CSS is a language for describing the visual presentation of documents described by a markup language. The markup language most commonly used in conjunction with CSS is HTML (Hyper Text Markup Language).

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@Viewport @media use for input type?

I've searched high and low for some way to setup my HTML5/CSS3 for various devices. Going by screen resolution isn't the best route because some times the screen size of one device is the same as ...
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1answer
36 views

Is there a performance difference between background-size:cover and background-size:100% auto?

I know what the difference is between background-size: cover and background-size: 100% auto. I'm curious if there is a performance difference between the two and which one would be preferred?