<div id="myModal" class="modal fade" role="dialog">
  <div class="modal-dialog">
    <!-- Modal content-->
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal">&times;</button>
        <!--         <h4 class="modal-title">Modal Header</h4> -->
      </div>
      <div class="modal-body text-center">
        <h1>Full screen Transparent Bootstrap Modal</h1>
        <p>FEEL FRREE TO GET YOUR MODAL CODE HERE FOLKS.</p>
        <a class="pre-order-btn" href="#">GET THE MODAL CODE</a>
      </div>
      <div class="modal-footer">
        <!--         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> -->
      </div>
    </div>

  </div>
</div>
.modal-body { 
  h1 { 
    font-weight:900; 
    font-size:2.3em;
    text-transform:uppercase;
  }
  
  a.pre-order-btn { 
    color:#000;
    background-color:gold;
    border-radius:1em;
    padding:1em;
    display: block;
    margin: 2em auto;
    width:50%;
    font-size:1.25em;
    font-weight:6600;
    &:hover { 
    background-color:#000;
      text-decoration:none;
      color:gold;
    }
  }
  
  
}

View Compiled
$(document).ready(function(){       
   $('#myModal').modal('show');
    }); 
Run Pen

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js
  2. https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js