Checkboxes
Checkboxes allow users to select one or more options at the same time.
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    Best Practices
- Please read Label Guidance first.
 - When possible, present them in a vertical list.
 - If only one item can be selected, use Radios.
 - If the user needs to activate or deactivate something, use a Switch instead.
 - Ensure the 
idof the input matches theforof the label. - Set a checkbox as the default choice by adding the 
checkedattribute to it. 
Usage
Group of Checkboxes
<div class="form-group">
  <p class="label">Group of Checkboxes</p>
  <div class="custom-control custom-checkbox form-check">
    <input type="checkbox" class="custom-control-input form-check-input" id="checkboxValue1">
    <label class="custom-control-label form-check-label" for="checkboxValue1">Value 1</label>
  </div>
  <div class="custom-control custom-checkbox form-check">
    <input type="checkbox" class="custom-control-input form-check-input" id="checkboxValue2" checked>
    <label class="custom-control-label form-check-label" for="checkboxValue2">Value 2</label>
  </div>
  <div class="custom-control custom-checkbox form-check">
    <input type="checkbox" class="custom-control-input form-check-input" id="checkboxValue5" disabled>
    <label class="custom-control-label form-check-label" for="checkboxValue5">Value 5</label>
  </div>
</div>