<div class="container">
  <p>Hover over the card to see the drop shadow added</p>


<div class="card-deck">
  <div class="card">
    <img class="card-img-top" src="https://dummyimage.com/600x400/000/fff" alt="Card image cap">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <img class="card-img-top" src="https://dummyimage.com/600x400/000/fff" alt="Card image cap">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <img class="card-img-top" src="https://dummyimage.com/600x400/000/fff" alt="Card image cap">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
</div>
  
  
</div>
<!-- /.container -->
body {margin:2rem;}

/*
####################################################
M E D I A  Q U E R I E S
####################################################
*/

/*
::::::::::::::::::::::::::::::::::::::::::::::::::::
Bootstrap 4 breakpoints
*/

/* 
Extra small devices (portrait phones, less than 544px) 
No media query since this is the default in Bootstrap because it is "mobile first"
*/


/* Small devices (landscape phones, 544px and up) */
@media (min-width: 544px) {  

}

/* Medium devices (tablets, 768px and up) 
The navbar toggle appears at this breakpoint */
@media (min-width: 768px) {  

}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) { 

}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {  
    
}



/*
::::::::::::::::::::::::::::::::::::::::::::::::::::
Custom media queries
*/

@media (max-width: 950px) { 

}
$(document).ready(function() {
 // executes when HTML-Document is loaded and DOM is ready
console.log("document is ready");
  

  $( ".card" ).hover(
  function() {
    $(this).addClass('shadow-lg').css('cursor', 'pointer'); 
  }, function() {
    $(this).removeClass('shadow-lg');
  }
);
  
// document ready  
});

External CSS

  1. https://cdn.rawgit.com/JacobLett/bootstrap4-latest/master/bootstrap-4-latest.min.css

External JavaScript

  1. https://code.jquery.com/jquery-3.2.1.slim.min.js
  2. https://cdn.rawgit.com/JacobLett/bootstrap4-latest/504729ba/bootstrap-4-latest.min.js