Help me on the "padding-bottom:20px" still gives an error

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: 10px;
}

.red-box {
  background-color: crimson;
  color: #fff;
  padding-top: 40px;
  padding-right: 20px;
  padding-bottom: 20px;
  padding-left: 40px;
}

.blue-box {
  background-color: blue;
  color: #fff;
  padding-top:40px;
  padding-left:40px;
  padding-right:20px;
  padding-bottom:20px:
}
</style>
<h5 class="injected-text">margin</h5>

<div class="box yellow-box">
<h5 class="box red-box">padding</h5>
<h5 class="box blue-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: Add Different Padding to Each Side of an Element

Link to the challenge:
https://www.freecodecamp.org/learn/responsive-web-design/basic-css/add-different-padding-to-each-side-of-an-element

Hello elisonguo-moshi, and welcome to the forum!

You have a very basic syntax problem: check the end of this line padding-bottom:20px:

thanks ; miseed :smile: