How to Make Responsive Price List with HTML and CSS

Hi Everyone

I will represent how to make Responsive Price List

Code HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,
     initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Price List</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div>
        <h2>Web Hosting Price List</h2>
    </div>
    <div class="contant">
       <ul class="price">
         <li class="header">Basic</li>
         <li class="box"><strong>$5.99</strong>/Month</li>
         <li><strong>20 GB</strong> Disk Space</li>
         <li><strong>10 GB</strong> Data Transfer</li>
         <li><strong>NO</strong> Control Panel</li>
         <li><strong>50</strong> Mail Account</li>
         <li><strong>2</strong> FTB Account</li>
         <li><a href="#" class="button">Sign UP</a></li>
       </ul>
    </div>
    </div>
    <div class="contant">
       <ul class="price">
         <li class="header">Standard</li>
         <li class="box"><strong>$15.99</strong>/Month</li>
         <li><strong>75 GB</strong> Disk Space</li>
         <li><strong>50 GB</strong> Data Transfer</li>
         <li><strong>1</strong> Control Panel</li>
         <li><strong>250</strong> Mail Account</li>
         <li><strong>Unlimited</strong> FTB Account</li>
         <li><a href="#" class="button">Sign UP</a></li>
       </ul>
    </div>
    </div>
    <div class="contant">
       <ul class="price">
         <li class="header">Premium</li>
         <li class="box"><strong>$25.99</strong>/Month</li>
         <li><strong>200 GB</strong> Disk Space</li>
         <li><strong>100 GB</strong> Data Transfer</li>
         <li><strong>1</strong> Control Panel</li>
         <li><strong>Unlimited</strong> Mail Account</li>
         <li><strong>Unlimited</strong> FTB Account</li>
         <li><a href="#" class="button">Sign UP</a></li>
       </ul>
    </div>
</body>
</html>

Code CSS

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #333;
    color: #fff;
}

h2 {
    text-align: center;
}

.contant {
    float: left;
    width: 33.3%;
    padding: 8px;
    box-sizing: border-box;
}

.price {
    background-color: #fff;
    color: #555;
    list-style-type: none;
    border: 1px solid #555;
    margin: 0;
    padding: 0;
    transition: 0.3s;
}

.price:hover {
    box-shadow: 0 10px 15px 0 #fff;
}

.price .header {
    background-color: #4CAf50;
    color: #fff;
    font-size: 25px;
}

.price li {
    padding: 20px;
    border-bottom: 1px solid #eee;
    text-align: center;
}

.price .box {
    background-color:#f4f4f4;
    font-size:20px;
}

.button {
    background-color: #4CAf50;
    border: none;
    color: #fff;
    padding: 10px 15px;
    text-align: center;
    text-decoration: none;
    font-size: 20px;
}

.button:hover {
    background-color: #eee;
    color: #4CAf50;
}

@media(max-width:700px) {
    .contant {
        width: 100%;
    }
    .button {
        padding: 10px 100px;
    }
}