Indent Comments with one Rule

Indent Comments with one Rule

HTML

<section>
            <h2>Comments</h2>
                <article>
                    <header>
                        <h3>Posted by: The Dude</h3>
                        <p><time pubdate datetime="2009-10-10T19:10-08:00">~1 hour ago</time></p>
                    </header>
                        <p>Oh, the usual. I bowl. Drive around. The occasional acid flashback. </p>
                        
                        <article>
                            <header>
                                <h3>Posted by: The Dude2</h3>
                                <p><time pubdate datetime="2009-10-10T19:10-08:00">~1 hour ago</time></p>
                            </header>
                                <p>That's a great plan, Walter. That's fuckin' ingenious, if I understand it correctly. It's a Swiss fuckin' watch.</p>
                                    <article>
                                        <header>
                                            <h3>Posted by: The Dude3</h3>
                                            <p><time pubdate datetime="2009-10-10T19:10-08:00">~1 hour ago</time></p>
                                        </header>
                                            <p>What do you need that for, Dude? </p>
                                    </article>
                                    <article>
                                        <header>
                                            <h3>Posted by: The Dude4</h3>
                                            <p><time pubdate datetime="2009-10-10T19:10-08:00">~1 hour ago</time></p>
                                        </header>
                                            <p>Yeah, but Walter... </p>
                                                                                <article>
                                        <header>
                                            <h3>Posted by: The Dude4</h3>
                                            <p><time pubdate...

CSS

article{
    margin-left: 48px;
    border: 1px solid #000;
    margin-bottom: 10px;

}

article article
{
    margin-left: 48px;
    border: 1px solid #000;
    margin-bottom: 10px;
}

article:nth-child(odd)
{
  background-color: blue;
}

article:nth-child(even)
{
  background-color: red;
}