How do I remove only the top part of a box-shadow?

This works, but I’ll admit to not knowing if there’s a better way (or if it’s possible without adding a wrapper element). Using multiple box-shadows would be a good idea, but I can’t seem to make it look the same.

See: http://jsfiddle.net/thirtydot/8qEUc/3/

HTML:

<div id="bla">
    <div> something </div>
</div>

CSS:

#bla {
    overflow-y: hidden;
    padding: 0 10px 10px 10px;
    margin: 0 -10px
}
#bla > div {
    /* the CSS from your question here */
}