What is the best way to center an object both vertically and horizontally within a container with an unspecified height?

How would you go about centering an object both horizontally and vertically within a container without a fixed height?

Answer №1

.middleSection {
  position: fixed;
  top: 40%;
  left: 40%;
  transform: translate(-50%, -50%);
}
<div class="middleSection">welcome</div>

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