Box Shadow on only 3 sides

Question

I have two overlapping divs that have css3 box shadows. The trouble is that even when I set the z-index I will still need to eliminate one of the div's box-shadow. I have seen cases where negative spreads and zero values are used but I don't think that would work here. The code I have now is: ``` #bulb-top { position: relative; width: 280px; height: 280px; background-color: #E5F7A3; -webkit-border-radius: 280px; -moz-border-radius: 280px; border-radius: 280px; border: 8px solid #FFF40C; top: -430px; margin-left: auto; margin-right: auto; -webkit-box-shadow: 0px 0px 15px 1px #FFF40C; -moz-box-shadow: 0px 0px 15px 1px #FFF40C; box-shadow: 0px 0px 15px 1px #FFF40C; z-index: 4; } #bulb-bottom { position: relative; width: 140px; height: 120px; background-color: #E5F7A3; -moz-border-radius-topleft: 0px; -moz-border-radius-topright: 0px; -moz-border-radius-bottomright: 30px; -moz-border-radius-bottomleft: 30px; -webkit-border-radius: 0px 0px 30px 30px; border-radius: 0px 0px 30px 30px; borde…

Accepted Answer

You can use the `::before` pseudo-element to block out one side of the box shadow. It's not perfect, but it might be enough for your situation. Here's the updated jsFiddle.

```
#bulb-bottom:before {
    background-color: #E5F7A3;
    content: '';
    display: block;
    height: 30px;
    margin: 0 auto;
    position: relative;
    top: -10px;
    width: 140px;
}​
```

Box Shadow on only 3 sides

Solution

Problem