[beta] Decrease the Opacity of An Element - browser specific test failure

Challenge decrease-the-opacity-of-an-element has an issue. User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/602.4.8 (KHTML, like Gecko) Version/10.0.3 Safari/602.4.8. Please describe how to reproduce this issue, and include links to screenshots if possible.

<style>
  h4 {
    text-align: center;
    background-color: rgba(45, 45, 45, 0.1);
    padding: 10px;
    font-size: 27px;
  }
  p {
    text-align: justify;
  }
  .links {
    text-align: left;
    color: black;
    opacity: 0.7;
    
  }
  #thumbnail:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  }
  .fullCard {
    width: 245px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin: 10px 5px;
    padding: 4px;
  }
  .cardContent {
    padding: 10px;
  }
  .cardText {
    margin-bottom: 30px;
  }

</style>
<div class="fullCard" id="thumbnail">
  <div class="cardContent">
    <div class="cardText">
      <strong><h4>Alphabet</h4></strong>
      <hr>
      <em><p>Google was founded by Larry Page and Sergey Brin while they were Ph.D. students at Stanford University.</p></em>
    </div>
    <div class="cardLinks">
      <u>
        <a href="https://en.wikipedia.org/wiki/Larry_Page" class="links">Larry Page</a><br><br>
        <a href="https://en.wikipedia.org/wiki/Sergey_Brin" class="links">Sergey Brin</a>
      </u>
    </div>
  </div>
</div>

[no-stack-dub-sack]

@Marvive Thanks for reporting this! I am able to confirm this on Safari, however the solution works correctly in Chrome.

/ cc @freeCodeCamp/moderators - it looks like this is because Safari returns a finer precision number than Chrome does when $('.links').css('opacity') is called. Even though the user sets an opacity of 0.7 Safari ridiculously returns "0.699999988079071". So to fix this, we could use Chai’s approximately assert:

assert.approximately(parseFloat($('.links').css('opacity')), 0.7, 0.1, 'message: ....');

where 0.7 is the expected value, and 0.1 is the +/- delta.

This seems easy enough - should we open it up to Help Wanted / First Timers Only?

[Greenheart]

@systimotic It could be, but it seems more like Safari has some funky math for getting/setting some css values.