Stuck at adding a negative margin

I can’t get past the challenge I have entered the negative 15 into my code but the challenge will not let me go forward. I have tried signing out, refreshing the page and any help would be greatly appreciated thank you.

Have you solve this yet? If not, can you post your code and a link to the challenge?

Add a Negative Margin to an Element
An element’s margin controls the amount of space between an element’s border and surrounding elements.

If you set an element’s margin to a negative value, the element will grow larger.

Try to set the margin to a negative value like the one for the red box.

Change the margin of the green box to -15px, so it fills the entire horizontal width of the yellow box around it.

Run tests (ctrl + enter)
Reset your code
Get a hint
Ask for help on the forum
Your green-box class should give elements -15px of margin.

  .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;
    margin: -15px;

  .green-box {
    background-color: green;
    padding: 20px;
    margin: -15px;

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

​I have done what was asked and tapped the run test. But nothing happens.

The code is correct. Try hitting the reset button and try again.

Figured it out it was the position. Thank you for the help