Learn CSS Colors by Building a Set of Colored Markers - Step 15

Tell us what’s happening:
Describe your issue in detail here.

Your code so far

<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Colored Markers</title>
    <link rel="stylesheet" href="styles.css">
  </head>
  <body>
    <h1>CSS Color Markers</h1>
    <div class="container">
      <div class="marker">
      </div>
      <div class="marker">
      </div>
      <div class="marker">
      </div>
    </div>
  </body>
</html>
/* file: styles.css */
h1 {
  text-align: center;
}


/* User Editable Region */

.marker {
  width: 200px;
  height: 25px;
  background-color: red;
  margin: auto; 10px;
  
}

/* User Editable Region */


Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Challenge: Learn CSS Colors by Building a Set of Colored Markers - Step 15

Link to the challenge:

The margin shorthand property works that your first value is going to affect your top and bottom borders and your second value will effect your right and left margin.
Ex:

.box{ 
margin: 10px 40px;

In this example the box element will have a margin-top/bottom of 10px and a margin-left/right of 40px. As you can see both values are separated by a space and not a comma.

In your case you want to give your crayon a top/bottom margin of 10px and a right/left margin of auto so that it will get placed in the center of the page. Give your margin property a value of 10px followed by a value of auto which should be separated by a space.
Hope this helps.

thankyou for your guidance

Did it work for you?

although i posted this one by mistake my real problem was step 78

I already had done this

can u pls help me with this
Learn CSS Colors by Building a Set of Colored Markers - Step 78 it says to add css cap rule and sleeve rule with display property and inlineblock as attribute