Checkbox not working with materializecss - HTML, CSS

To be work. It seems like you need to put a relation between the label and the input check. Why don't you try in this way

<div>
  <input type="checkbox" id="check">
  <label for="check">label 1</label>
</div>

http://materializecss.com/forms.html#checkbox

In v1.0.0, checkbox inside label tag with text wrapped around span will only work.

   <label>
        <input type="checkbox" />
        <span>Red</span>
   </label>

https://github.com/Dogfalo/materialize/issues/1376

 <!-- Compiled and minified CSS -->
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">

    <!-- Compiled and minified JavaScript -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
    
    
   Checkbox:  <br/>
   
   <label>
           <input type="checkbox" />
           <span></span>
      </label>