box-shadow on img in CSS

Is it possible to add a shadow to the img tag in CSS, I tried and it doesn't seems to work. Am I correct or my code is just messed up

CSS

.image_carousel img {
  padding-right: 14px;
  display: block;
  float: left;
  box-shadow: 3px 3px 1px #ccc;
  -webkit-box-shadow: 3px 3px 1px #ccc;
  -moz-box-shadow: 3px 3px 1px #ccc;
}

HTML

<div class="image_carousel"><img src="../imgs/image.jpg" width="800" height="600" alt=""/></div>