I have tried removing white space and it hasn't worked. I am trying to position the 'plans' in an inline-block, however, I have not had any luck. I have tried adjusting the height/width, font size, etc, but still no luck.
I have copied this code directly from a Udemy tutorial video, so I am really lost and not sure what is wrong. This is my first time posting a question, so if there is any advice on how to ask better perhaps, please let me know in the comments.
The problem is .plan {display: inline-block;} is not appearing to function properly in my code. (All of my styles are in a separate CSS style sheet.)
At the bottom of my HTML, I tossed it a snippet of the CSS I used in a separate style sheet as a reference.
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="main.css">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Montserrat:wght@700&display=swap" rel="stylesheet">
<title></title>
</head>
<body>
<header class="main-header">
<div>
<a href="main.html" class="main-header_brand">
uHost
</div>
<nav class="main-nav">
<ul class="main-nav_items">
<li class="main-nav_item"><a href="packages.html">Packages</a></li>
<li class="main-nav_item"><a href="customers.html">Customers</a></li>
<li class="main-nav_item main-nav__item-cta"><a href="start-hosting.html">Start Hosting</a></li>
</ul>
</nav>
</header>
<main>
<section id="product-overview">
<h1>Get the freedom you deserve.</h1>
</section>
<section id="plans">
<h1 class="section-title">Choose Your Plan</h1>
<div>
<article class="plan">
<h1>FREE</h1>
<h2>$0/month</h2>
<h3>For hobby projects or small teams.</h3>
<ul>
<li>1 workspace</li>
<li>Unlimited Traffic</li>
<li>10GB Storage</li>
<li>Basic support</li>
</ul>
<div>
<button>CHOOSE PLAN</button>
</div>
</article>
</div>
<div>
<article class="plan">
<h1>FREE</h1>
<h2>$29/month</h2>
<h3>For ambitious projects.</h3>
<ul>
<li>5 workspace</li>
<li>Unlimited Traffic</li>
<li>100GB Storage</li>
<li>Plus support</li>
</ul>
<div>
<button>CHOOSE PLAN</button>
</div>
</article>
</div>
<div>
<article class="plan">
<h1>FREE</h1>
<h2>$99/month</h2>
<h3>Your enterprise solution.</h3>
<ul>
<li>10 workspace</li>
<li>Unlimited Traffic</li>
<li>Unlimited Storage</li>
<li>Priority support</li>
</ul>
<div>
<button>CHOOSE PLAN</button>
</div>
</article>
</div>
</section>
</main>
</body>
</html>
.plan{
display: inline-block;
background color: lightblue;
text-align: center;
padding: 16px;
margin: 8px;
width: 25%;
list-style: none;
vertical-align: middle;
}