jQuery - Change CSS of one div that shares its class with other divs

I am trying to change the CSS of a single DIV that shares its class with other divs.

I have been trying looking around for a solution but nothing seems to work.

I am trying using the code below without results:

$(".singleOffer").click(function(){
    $(this).parent().find(".offerSocial").css({transform: "translateY(0%)", opacity: "1" });
});

HTML

<div id="pattern" class="pattern">
  <ul class="g">

<li class="singleOffer">
      <img class="offerImg" src="<?php echo $file ?>" alt="Product Name" />
      <div class="offerSocial">
          <a class="previewLink" target="_blank" href="<?php echo $file ?>" >DOWNLOAD</a>
          <label class="shareLabel">Share on</label>
          <div class="share-buttons">
              <button class="fbShare" type="button" onclick="window.open('<?php echo $file ?>', 'newwindow', 'width=500, height=500'); return false;">Facebook</button>
              <button class="twShare" type="button" onclick="window.open('<?php echo $file ?>', 'newwindow', 'width=500, height=500'); return false;">Twitter</button>
          </div>
      <div>
</li>

<li class="singleOffer">
      <img class="offerImg" src="<?php echo $file ?>" alt="Product Name" />
      <div class="offerSocial">
          <a class="previewLink" target="_blank" href="<?php echo $file ?>" >DOWNLOAD</a>
          <label class="shareLabel">Share on</label>
          <div class="share-buttons">
              <button class="fbShare" type="button" onclick="window.open('<?php echo $file ?>', 'newwindow', 'width=500, height=500'); return false;">Facebook</button>
              <button class="twShare" type="button" onclick="window.open('<?php echo $file ?>', 'newwindow', 'width=500, height=500'); return false;">Twitter</button>
          </div>
      <div>
</li>

.....

  </ul>
</div>

via Chebli Mohamed