Source: dist/css/library_boot.css, line 11454
2.4.2 Text Inputs
Bellow is the comparison of using the basic Html input types with the utility classes only vs using the bootstrap pattern for the input.
Example
Utility Class
Bootstrap
<div class="flex_row flex gap-x_5">
<div class="flex_auto">
<h3>Utility Class</h3>
<label for="example-input-email" class='m-b_3'>Email address</label>
<input type="email" id="example-input-email" placeholder="Enter email"/>
</div>
<div class="flex_auto">
<h3>Bootstrap</h3>
<label for="exampleFormControlInput1" class="form-label">Email address</label>
<input type="email" class="form-control" id="exampleFormControlInput1" placeholder="name@example.com"/>
</div>
</div>