Question: I wanted to ask you for help.

I have a `Book` table from which I want to draw two recently added books (there is no add date in the database, I want to sort `idb` - book id).
I want to do this by the appropriately written method name in Repository (i.e. by `Spring Data`)
that is something like that
The `<Book> findAllOrderByIdbDesc();`
I want to limit the results to two and I have a problem with that.
How do you save such a query?

Answer: 
It is:

```
   -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.5); 

```

Demo: <https://codepen.io/igcorreia/pen/YJeQgb>

**Make sure you check browser compatibility.** As of early 2019 this is [not supported in Chrome or Firefox](https://caniuse.com/#feat=css-backdrop-filter) - so for now you may need to export a flattened image with the blur built into it.

Update Sept. 2021
=================

Check Browser Compatibility <https://www.caniuse.com/?search=backdrop-filter>

The simplest is:

```
backdrop-filter: blur(10px);
background-color: rgba(255, 255, 255, 0.5); 

```

Note, the background color must be 50%, 20% or 10% transparent in order for you to see the effect.

Firefox is still lacking behind on this effect.
Have you tried having a look at XD's design specs feature? [Adobe XD design specs](https://helpx.adobe.com/xd/help/design-specs-for-developers.html) let you and your collaborators view design specs published from Adobe XD, which enable you to inspect and comment on flows, measurements, and styles.

1. Click the share button in the upper right hand of XD, and click "Publish Design Specs"

[![enter image description here](https://i.stack.imgur.com/C5orb.png)](https://i.stack.imgur.com/C5orb.png)

2. Under "Export for", select "Web" (or "iOS" or "Android")

[![enter image description here](https://i.stack.imgur.com/BGazs.jpg)](https://i.stack.imgur.com/BGazs.jpg)

3. Go to the generated link, and select the blurred object on the artboard. You'll be able to see specific values in the right-hand Specs panel for the following filter properties:

	* blur
	* brightness
	* opacity

[![enter image description here](https://i.stack.imgur.com/077kZ.png)](https://i.stack.imgur.com/077kZ.png)