Use the align-baseline class in Bootstrap 4 to align an element with the baseline of the parent elment.
Set the align-baselinec class like the following code snippet:
<span class="align-baseline">
Now add the content inside it:
<span class="align-baseline">
Demo Baseline
</span>
You can try to run the following code to align an element with the parent’s baseline:
Live Demo
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>Example</h2>
<p>This is demo text<p>
<span class="align-baseline">Demo Baseline</span>
</div>
</body>
</html>