/* Modal Styles */
<style>
  .modal {
    display: none; 
    position: fixed; 
    z-index: 1000; 
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgb(0,0,0); 
    background-color: rgba(0,0,0,0.9); 
  }
  .modal-content {
    margin: 15% auto; 
    padding: 20px;
    width: 80%; 
    max-width: 700px;
    text-align: center;
  }
  .close {
    position: absolute;
    top: 10px;
    right: 25px;
    color: #fff;
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
  }