<div class="box">
  <p>This text is centered.</p>
</div>
.box {
  height: 100px;
  position: relative;
  background-color: #f9999f;
  text-align: center;
}

.box p {
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

External CSS

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External JavaScript

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