CodePen Embed - vh and vw

<div class="example">
  <h1>Title</h1>
</div>

.example {
  background: #000;
  width: 100vw;
  height: 100vh;
}

h1 {
  color: white;
  font-size: 48px;
  height: 100vh;
  margin: 0 auto;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
}

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