Wha wrong with my code

HTML-CSS
1

Tell us what’s happening:

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 40px 20px 40px;
}

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

}

.green-box {
  background-color: green;
  margin: 20px 40px 20px 40px;
}
</style>
<h5 class="injected-text">margin</h5>

<div class="box yellow-box">
<h5 class="box red-box" style:padding:1.5em;>padding</h5>
<h5 class="box green-box">padding</h5>
</div>

Your browser information:

User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36.

Challenge: Understand Absolute versus Relative Units

Link to the challenge:
https://www.freecodecamp.org/learn/responsive-web-design/basic-css/understand-absolute-versus-relative-units

2

this is not the way to use inline styling
attributes to a tag are always name="value"

and anyway you were asked to add that in the css, add the property to the class selector

3

Take a close look at your code for

You are missing colon : between padding and 1.5em;