Problem with challenge - Adjusting the Padding of an Element

HTML-CSS
1

Tell us what’s happening:
I’m I going something wrong? I need help here, I changed the padding of the green box but still not moving on to next challenge
I Think I did everything that I should have but if I’m not please correct me, really falling behind with this one

Your code so far

<style>
  .injected-text {
    margin-bottom: -25px;
    text-align: center;
  }

  .box {
    border-style: solid;
    border-color: black;
    border-width: 5px;
    text-align: center;
  }

  .yellow-box {
    background-color: yellow;
    padding: 20px;
  }
  
  .red-box {
    background-color: red;
    padding: 20px;
  }

  .green-box {
    background-color: green;
    padding: 20px;
  }
</style>
<h5 class="injected-text">margin</h5>

<div class="box yellow-box">
  <h5 class="box red-box">padding</h5>
  <h5 class="box green-box">padding</h5>
</div>

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Linux; Android 6.0; 5010X Build/MRA58K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.111 Mobile Safari/537.36 EdgA/41.0.0.1656.

Link to the challenge:
https://www.freecodecamp.org/challenges/adjusting-the-padding-of-an-element

2

Try to reset your code or browser.
It works for me perfectly

3

I have tried that, Now I’ve been stuck for weeks