Check Box & Radio Button

In its ways, Bootstrap styles checkboxes...
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="form-check">
      <input class="form-check-input" type="checkbox" id="cd">
      <label class="form-check-label" for="cd">Default checkbox</label>
   </div>
   <div class="form-check">
      <input class="form-check-input" type="checkbox" id="cc" checked>
      <label class="form-check-label" for="cc">Checked checkbox</label>
   </div>

</body><html>
... and radio buttons.
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="form-check">
      <input class="form-check-input" type="radio" name="flexRadioDefault" id="flexRadioDefault1">
      <label class="form-check-label" for="flexRadioDefault1">Default radio</label>
   </div>
   <div class="form-check">
      <input class="form-check-input" type="radio" name="flexRadioDefault" id="flexRadioDefault2" checked>
      <label class="form-check-label" for="flexRadioDefault2">Default checked radio</label>
   </div>

</body><html>
A switch is a feature beyond original HTML.
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="form-check form-switch">
      <input class="form-check-input" type="checkbox" id="flexSwitchCheckDefault">
      <label class="form-check-label" for="flexSwitchCheckDefault">Default switch checkbox input</label>
   </div>
   <div class="form-check form-switch">
      <input class="form-check-input" type="checkbox" id="flexSwitchCheckChecked" checked>
      <label class="form-check-label" for="flexSwitchCheckChecked">Checked switch checkbox input</label>
   </div>

</body><html>
You can stack the input fields horizontally.
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="form-check form-check-inline form-switch">
      <input class="form-check-input" type="checkbox" id="flexSwitchCheckDefault">
      <label class="form-check-label" for="flexSwitchCheckDefault">1</label>
   </div>
   <div class="form-check form-check-inline form-switch">
      <input class="form-check-input" type="checkbox" id="flexSwitchCheckChecked" checked>
      <label class="form-check-label" for="flexSwitchCheckChecked">2</label>
   </div>

</body><html>