Understand Absolute versus Relative

Here it is asked to add padding to the element with class red-box and set it to 1.5em.
And I set padding as 1.5em in red-box class. But still it is not working. can anyone please help me?

Your code so far

  .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 40px 20px 40px;

  .red-box {
    background-color: red;
    margin: 20px 40px 20px 40px;
    padding : 1.5em;

  .green-box {
    background-color: green;
    margin: 40px 20px 20px 40px;
<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>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36.

Link to the challenge:

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It’s working fine for me, I think you have written your code in some editor and copied & pasted it in FCC.
Reset your code and add padding: 1.5em to class red-box.

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But I have not written the code in another editor and then paste. And also after resetting the code it is not working.

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In my case it is giving error for

second condition.

Try resetting your code and clear your browser cookies/cache that will fix this.

I don’t know where I am getting wrong. I reset the code again. But still it is not working.

Okay found the problem in your code.
Remove extra space after property.

padding[remove spacing]: 1.5em;


yes… It is working now. Extra space was there. Thank you for your Help.