<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <link rel="stylesheet" href="./style.css" type="text/css" />
  </head>
  <body>
    <div class="container">
      <div class="card center">
        <div class="front center">Front side of the card</div>
        <div class="back center">Back side of the card</div>
      </