'CSS3 Question: how to have no box shadow on the top of a div?

Right now when I do this:

-moz-box-shadow: 0 0 200px #00C0FF;
-webkit-box-shadow: 0 0 200px #00C0FF;
box-shadow: 0 0 200px #00C0FF;

it gives a box shadow on all sides. I want it on 3 sides but not the top. How to prevent the shadow from appearing at the top?

css


Solution 1:[1]

box-shadow support multiple commas which mean this is possible and can be done like below:

box-shadow: 2px 2px 3px #888, -2px 2px 3px #888;

The first group bring shadow to the right & bottom while the second group bring shadow to the left (by using negative value) & bottom.

The complete code for cross browser support is:

-moz-box-shadow: 2px 2px 3px #888, -2px 2px 3px #888;
-webkit-box-shadow: 2px 2px 3px #888, -2px 2px 3px #888;
box-shadow: 2px 2px 3px #888, -2px 2px 3px #888;

Solution 2:[2]

Just have a vertical offset only:

.shadow {
  -moz-box-shadow: 0px 5px 200px #00C0FF;
  -webkit-box-shadow: 0px 5px 200px #00C0FF;
  box-shadow: 0px 5px 200px #00C0FF;
}

This will shift the shadow down so that the top has less of a shadow. You will have to play with it to get it the way you want it in your situation. This site also has some great info on box shadows, such as layering, as well as browser support.

Solution 3:[3]

Use a pseudo-element to cover the edge of the element you don't want to have a shadow. This is similar to ajcw's approach, but doesn't require manually adding the extra element every time — just once, in your CSS — and uses absolute positioning, which I think is much cleaner.

.nav-link.active {
  position: relative;
  box-shadow: 0 0 5px #888;
}

.nav-link.active::after {
  position: absolute;
  content: ' ';
  height: 7px;
  bottom: -8px;
  left: -5px;
  right: -5px;
  background-color: white;
  
  /*this one's only needed because we don't want this pseudo-element to be clickable*/
  pointer-events: none; 
}
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet"/>

<div class="p-4">
  <ul class="nav nav-tabs">
    <li class="nav-item">
      <a class="nav-link active" aria-current="page" href="#">Tab 1</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#">Tab 2</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#">Tab 3</a>
    </li>
  </ul>
</div>

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Syafiq Freman
Solution 2 cdeszaq
Solution 3 Jacob Stamm

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