"https://cdnjs.cloudflare.com/ajax/libs/bootstrap-hover-dropdown/2.2.1/bootstrap-hover-dropdown.js"></script>

<style type="text/css">
  html {
    box-sizing: border-box;
  }

  *,
  *:before,
    *:after {
      box-sizing: inherit;
    }

  .column {
    float: left;
    width: 33.3%;
    margin-bottom: 16px;
    padding: 0 8px;
  }

  @media (max-width: 650px) {
    .column {
      width: 100%;
      display: block;
      text-align: center;
      }
  }

  .card {
    box-shadow: 0 4px 8px 0 rgba(0, 0, 