How to create: vertical line

Learn how to use CSS to create a vertical line.

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How to create a vertical line

<style>
.vl {
  border-left: 6px solid green;
  height: 500px;
}
</style>
<div class="vl"></div>

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How to center a vertical line in the page:

.vl {
  border-left: 6px solid green;
  height: 500px;
  position: absolute;
  left: 50%;
  margin-left: -3px;
  top: 0;
}

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