Spinner

A spinner is an animated graphical figure used to indicate that something is loading.

There are two types of spinners – .spinner-border and .spinner-grow.
RESETRUNFULL
<!DOCTYPE html><html>
<head><link href='https://cdn.jsdelivr.net/npm/bootstrap@5.2.0-beta1/dist/css/bootstrap.min.css' rel='stylesheet' integrity='sha384-0evHe/X+R7YkIZDRvuzKMRqM+OrBnVFBL6DOitfPri4tjfHxaWutUpFmBp4vmVor' crossorigin='anonymous'>
      <script src='https://cdn.jsdelivr.net/npm/bootstrap@5.2.0-beta1/dist/js/bootstrap.bundle.min.js' integrity='sha384-pprn3073KE6tl6bjs2QrFaJGz5/SUsLqktiwsUTF55Jfv3qYSDhgCecCxMW52nD2' crossorigin='anonymous'></script>
      <style>div:not(.container):not(.tooltip):not(.tooltip *):not(.navbar *):not(.carousel-caption):not(.card *):not(.form-check):not(.input-group) { border:1px solid grey; text-align:center; }</style>
</head><body>

   <div class="spinner-border text-primary"></div>
   <div class="spinner-border text-secondary"></div>
   <div class="spinner-border text-success"></div>
   <div class="spinner-border text-danger"></div>
   <div class="spinner-grow text-warning"></div>
   <div class="spinner-grow text-info"></div>
   <div class="spinner-grow text-light" style="width: 3rem; height: 3rem;"></div>
   <button class="btn btn-primary" type="button">
      <span class="spinner-grow text-dark spinner-grow-sm" role="status" aria-hidden="true"></span>
      Loading...
   </button>

</body><html>