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CSS CSS Layout Techniques Display Modes Display Modes Challenge

I have ".secondary.col { margin-left: -4px; } " which I think is the correct answer, but it still saids invalid margin

I tried -5px -4px -10px -15px and none worked?

<!DOCTYPE html>
    <title>Display Modes</title>
    <link rel="stylesheet" href="page.css">
    <link rel="stylesheet" href="style.css">
    <div class="main-wrapper">  
        <header class="main-header">
            <h1 class="main-logo"><a href="#">My Work</a></h1>
            <ul class="main-nav">
                <li><a href="#">Design</a></li>
                <li><a href="#">Coding</a></li>
                <li><a href="#">Writing</a></li>
                <li><a href="#">Hire Me!</a></li>
        <div class="primary col">
            <h1>I'm a Front-end Designer</h1>
            <p>I design beautiful user interfaces, then bring them to life with HTML, CSS, and JavaScript. I love including personal photographs of nature, people and everyday things in my designs.</p>
            <p>If you need a front-end designer for your next project, <a href="#">take a look at my work</a>, then <a href="#">get in touch</a>!</p>
        <div class="secondary col">
            <h2>I Also Write</h2>
            <p>I like teaching others about the latest in web technology. So when I'm not designing or coding websites &amp; apps, you'll find me writing <a href="#">articles for my blog</a>.</p>
/* Complete the challenge by writing CSS below */

.main-header { 
  padding: 5px ;

.col, .main-logo, .main-nav, .main-nav li {
  display: inline-block;

.secondary.col {
  margin-left: -4px;

2 Answers

Hi David,

The question is looking for margin right, not left for .col class without secondary.

.col {
  margin-right: -4px;

Hello James, your div has two classes secondary and col,that's two classes and it can have as many as you wants but if it's one than it should look like this secondary-col. you can try just target .secondary and then put the margin: -4px; you don't need to target both classes.