<div class="container">
  <p>Change the values of the <code>box-shadow</code> property in each of the following examples to see how the drop shadow changes.</p>
  <div class="element element-1">
    <p>
      Element 1
    </p>
  </div>
  <div class="element element-2">
    <p>
      Element 2
    </p>
  </div>
  <div class="element element-3">
    <p>
      Element 3
    </p>
  </div>
</div>
body {
  background-color: #F5F5F5;
  color: #555;
  font-size: 1.1em;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

.container {
  margin: 40px auto 0;
  width: 90%;
}

.element {
  padding: 20px;
  background-color: white;
  color: #222;
  margin: 50px auto 100px;
  height: 200px;
  width: 200px;
  border: 10px solid black;
}

.element-1 {
  box-shadow: 1em 1em 1em purple;
}

.element-2 {
  box-shadow: -10px 20px 10px hsla(225, 90%, 30%, .5);
}

.element-3 {
  box-shadow: 70px 50px 30px 40px rgba(150, 53, 55, .5);
}