Spinners

Border spinner 
<div class="spinner-border text-primary" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-border text-secondary" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-border text-success" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-border text-danger" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-border text-warning" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-border text-info" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-border text-light" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-border text-dark" role="status">  <span class="sr-only">Loading...</span></div>
Growing spinner 
<div class="spinner-grow text-primary" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-grow text-secondary" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-grow text-success" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-grow text-danger" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-grow text-warning" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-grow text-info" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-grow text-light" role="status">  <span class="sr-only">Loading...</span></div><div class="spinner-grow text-dark" role="status">  <span class="sr-only">Loading...</span></div>
Alignment
Loading... 
<div class="spinner-border" role="status">  <span class="sr-only">Loading...</span></div><div class="d-flex justify-content-center">  <div class="spinner-border" role="status">    <span class="sr-only">Loading...</span>  </div></div><div class="clearfix">  <div class="spinner-border float-right" role="status">    <span class="sr-only">Loading...</span>  </div></div><div class="d-flex align-items-center">  <strong>Loading...</strong>  <div class="spinner-border ml-auto" role="status" aria-hidden="true"></div></div>
Size 
<!-- sm --><div class="spinner-border spinner-border-sm" role="status">  <span class="sr-only">Loading...</span></div><!-- lg --><div class="spinner-border" style="width: 3rem; height: 3rem;" role="status">  <span class="sr-only">Loading...</span></div>
Buttons 
<button class="btn btn-primary" type="button" disabled>  <span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span>  <span class="sr-only">Loading...</span></button><button class="btn btn-primary" type="button" disabled>  <span class="spinner-border spinner-border-sm mr-2" role="status" aria-hidden="true"></span>  Loading...</button>