how do I make device specific selectors in css [closed] - css

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I am wondering how to (and if you can) write device specific selectors.
I have done a google search for it and didn't find anything.

Selectors match elements based on information within the document tree. The device has nothing to do with selector matching whatsoever. So it doesn't make sense to be able to write device-specific selectors.
You were probably looking for media queries — that's the module that deals with device-specific CSS.

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Best practice to style react components? [closed]

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I started working on an app made with tsx. This app has a general stylesheet for everything and some of the components have inline styling. Personally it feels disorganized.
I'm a biginner at css so I don't know what would be the best way to aproach this. I thought of two options: do all inline styling or make a stylesheet for each component. The first feels wrong ,in the second I'm gonna end up with 30 stylesheets and the overrides are going to mess up everithing.
The styled-components library is universally popular and you'll find plenty of support from the large community that uses it. With this you can write your css inside your component files. I'd also recommend getting the VS-Code extension for it so that you get css intellisense.

CSS declarations are displayed twice in Chrome Inspector Tool? [closed]

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I don't know what bug it is, but it hurts.
Just look at the picture and tell me what do you think it is and how to fix?
As you can see problem, all classes duplicate itself.
Probably styles.css is linked 2 times in your HTML. Check the content of head tag.

Can I delete songs of iTunes over my app? [closed]

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I use MPMediaQuery class to query iTunes's songs, and then display them in my APP. But now, I received a new needs, that's delete songs. I find the MediaPlayer framework, there is no way to delete songs.
How could I do?
Thank you
No, you cannot. As the name suggests, the Media Player framework can only browse, select, and play media — it cannot modify the user's media collection, or the objects it contains.

Using (parts of) Wordpress Themes in xpages [closed]

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Not sure if this is a stupid question or not,
but i want to create a better looking notes database which should remind users of our companys homepage.
Is it possible to use codes extracts of the wordpress themes css code?!
It might be easier to start with the Bootstrap4 XPages plugin on openNTF and then work to skin that.
As long as CSS stylesheets don't reference by element ID, it's possible to utilise elements. However, bear in mind that parts of the CSS stylesheets you're using may get overwritten by inline styles or stylesheets from the XPages runtime itself. In my experience, you will usually need to make some modifications to the stylesheets your using, but it's doable.

Using normalize.css file to normalize the css effect in cross browser [closed]

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While moving on web I found normlize.css can be used to persist the css effect in various browser.
http://necolas.github.io/normalize.css/2.1.3/normalize.css
There are two approach to use it:
Approach 1: use normalize.css as a starting point for your own project’s base CSS, customising the values to match the design’s requirements.
Approach 2: include normalize.css untouched and build upon it, overriding the defaults later in your CSS if necessary.
I think 2nd is easy.
Does it mean including this css untouched and then working with our css in normal way, correct?

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