Matérialiser affichage de cartes en une seule ligne

Je suis se Matérialiser à l'aide de CSS cartes, qui peut être trouvé ici: http://materializecss.com/cards.html

J'ai créé les cartes, mais le problème est que les cartes ne sont pas affichées sur une seule ligne. Je veux l'adapter, de sorte que si la page est assez large pour afficher deux cartes en une seule ligne, il faut leur montrer, mais dans mon cas, ils ne s'affichent pas sur une seule ligne.

J'ai essayé tous les types de styles d'affichage à savoir: inline, inline-block, table, table-cell, run-in, block, etc. mais rien ne leur a montré dans une ligne.

Voici mon code:

HTML:

<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.6/js/materialize.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.6/css/materialize.min.css" rel="stylesheet" media="screen,projection"/>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta content="IE=edge" http-equiv="X-UA-Compatible">
<meta content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no, width=device-width" name="viewport">
<link href="http://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<!--Let browser know website is optimized for mobile-->
<title>My Works</title>
</head>
<body>
<div class="row">
<div class="col s12 m4">
<div class="card" style="display:run-in;">
<div class="card-image">
<img src="http://www.ilikewallpaper.net/ipad-wallpapers/download/2268/Square-Pattern-ipad-wallpaper-ilikewallpaper_com.jpg">
<span class="card-title" style="width:100%; background: rgba(0, 0, 0, 0.5);">Sample1</span>
</div>
<div class="card-content">
<p>I am a very simple card. I am good at containing small bits of information. I am convenient because I require little markup to use effectively.</p>
</div>
<div class="card-action">
<a href="#">This is a link</a>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col s12 m4">
<div class="card" style="display:run-in;">
<div class="card-image">
<img src="http://www.ilikewallpaper.net/ipad-wallpapers/download/2268/Square-Pattern-ipad-wallpaper-ilikewallpaper_com.jpg">
<span class="card-title" style="width:100%; background: rgba(0, 0, 0, 0.5);">Sample2</span>
</div>
<div class="card-content">
<p>I am a very simple card. I am good at containing small bits of information. I am convenient because I require little markup to use effectively.</p>
</div>
<div class="card-action">
<a href="#">This is a link</a>
</div>
</div>
</div>
</div>
<!--Import jQuery before materialize.js-->
<script type="text/javascript" src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
<script type="text/javascript" src="js/materialize.min.js"></script>
<div class="fixed-action-btn click-to-toggle" style="bottom: 45px; right: 24px;">
<a class="btn-floating btn-large red">
<i class="large material-icons">menu</i>
</a>
<ul>
<li><a class="btn-floating red" class="fbtn" href="test.html"><i class="material-icons">home</i></a></li>
<li><a class="btn-floating yellow darken-1" class="fbtn" href="#"><i class="material-icons">work</i></a></li>
<li><a class="btn-floating green" class="fbtn" href="about.html"><i class="material-icons">account_circle</i></a></li>
<li><a class="btn-floating blue" class="fbtn" href="contact.html"><i class="material-icons">speaker_notes</i></a></li>
</ul>
</div>
<div class="clear" style="clear:both; height: 100px;">
</div>
<footer class="ui-footer" style="background:#fafafa; width:100%; position:fixed; z-index:99; clear:both;">
<div class="container">
<p>&copy; Yogesh Singh Choudhary</p>
</div>
</footer>
</body>
</html>