demo-modal.html

<div class="dialog-wrapper" id="example-modal">
  <div class="dialog alert">
    <div class="dialog__header my-1 p-1">
      <h3>Dialog Header</h3>
    </div>
    <div class="dialog__body my-1 p-1">
      <p>Dialog body text</p>
    </div>
    <div class="dialog__footer txt-right my-1 p-1">
      <button class="dialog-btn px-sm">Action 1</button>
      <button class="dialog-btn px-sm">Action 1</button>
    </div>

    <button class="close-modal" id="close-modal-demo">
      <i class="fas fa-times" title="close"></i>
    </button>
  </div>
</div>