CSS box-shadow on scrolled content

Question

I want to have a div with an inset box-shadow that has scrolled content in it. Unfortunately, the box-shadow doesn't get casted on the elements within the content, but rather on the background, but I want it to cover the content elements as well.

I stumbled upon this solution: http://jsfiddle.net/HPkd3/ (via). The problem is, I can't get it to work with my scrolled setup; if I position the mask inside the scrolling div, the shadow scrolls away - and if I position it outside of the div, the scrollbar has the shadow cast upon it, which looks weird.

Any ideas how to get this right?

Edit: Some example code: http://jsfiddle.net/ZSpSS/2/

I want the red squares in this example covered with the shadow, while the shadow should be persistent when I scroll through the content.

Answer 1

I totally have this working! Check out:

http://jsfiddle.net/yobert/6Ff4u/

Note the red background blocks correctly are "under" the shadows.

Caveats: Requires you to guess the size of the scrollbar in pixels. I bet there is a safe way to measure this with javascript though. If you only have a vertical scrollbar, this ends up being much simpler since you don't need to adjust the margin-bottom.

Answer 2

Have you tried something like this:

CSS:

#test{
    width:500px;
    height:200px;
    overflow:auto;
    -moz-box-shadow: inset 1px 1px 20px 4px black;
    -webkit-box-shadow: inset 1px 1px 20px 4px black;
    box-shadow: inset 1px 1px 20px 4px black;
}

HTML:

<div id="test"><p>
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<br /></p></div>

If you can give more details I can help with a more specific answer

Answer 3

try this

box-shadow:1px 1px 1px 1px #000000 inset; pointer-events: none;

Answer 4

Here is one possible solution.

I commented my CSS styles and you should easily understand my html markup. Here is what I did.

1. Created two divs
2. One is acting as the container for the one that has the inset box shadow .outer
3. The other one contains the inset box shadow .inner-content
4. I added overflow:scroll to the .inner-content div to apply your scroll bar. ( you can also change overflow:scroll to overflow:auto which will also give you a scroll bar