<br />

<br />

    <div class="btn-group" id="group1">

      <input type="radio" class="btn-check" name="options" id="option1" autocomplete="off" />

      <label class="btn btn-secondary" for="option1">Radio 1</label>

​

      <input type="radio" class="btn-check" name="options" id="option2" autocomplete="off" />

      <label class="btn btn-secondary" for="option2">Radio 2</label>

​

      <input type="radio" class="btn-check" name="options" id="option3" autocomplete="off" />

      <label class="btn btn-secondary" for="option3">Radio 3</label>

    </div>

    <br />

    <br />

    <div class="btn-group" id="group2">

      <input type="radio" class="btn-check" name="options" id="option4" autocomplete="off" />

      <label class="btn btn-success" for="option4">Radio 4</label>

​

      <input type="radio" class="btn-check" name="options" id="option5" autocomplete="off" />

      <label class="btn btn-success" for="option5">Radio 5</label>

​

      <input type="radio" class="btn-check" name="options" id="option6" autocomplete="off" />

      <label class="btn btn-success" for="option6">Radio 6</label>

    </div>