<div class="parent">
  <h2>parent</h2>
  <code>position: relative;</code>
  <div class="child">
    <h2>child</h2>
      <code>position: absolute;</code><br>
      <code>top: 0;</code><br>
      <code>left: 0;</code><br>
  </div>
</div>

/* HSL */
$color1: hsla(117%, 50%, 84%, 1);
$color2: hsla(114%, 15%, 75%, 1);
$color3: hsla(305%, 12%, 61%, 1);
$color4: hsla(327%, 19%, 45%, 1);
$color5: hsla(319%, 13%, 5%, 1);

body {
  font-family: 'Roboto Slab', serif;
  background: $color1;
  color: $color5;
}

div {
  border-radius: 10px;
  text-align: center;
}

h2 {
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0 10px;
  margin-bottom: 5px;
}

code {
  padding: 5px 0px;
}

.parent {
  position: relative;
  background: $color2;
  width: 80vw;
  margin: 8vw 10vw;
  height: 200px;
  border: 5px dotted $color4;
}

.child {
  opacity: 0.8;
  height: 150px;
  background: $color3;
  border: 3px dotted $color4;
  width: 200px;
  position: absolute;
  top: 0;
  left: 0;
}