I need help, I don't know how to add fading effect of changing background color of body element, by checking checkbox.
(it changes it's color, but I don't know how to add fading effect)
HTML:
<div class="container">
            <label class="switch" for="checkbox">
            <input type="checkbox" id="checkbox" />
              <div class="slider round"></div>
            </label>
</div>
Jquery:
$(document).ready(function(){
      $('#checkbox[type=checkbox]').on('change', function(){
           if($(this).prop('checked')){
              $('body').css('background-color', 'red');
           }
           else {
               $('body').css('background-color', '#181818');
           }
    });
});