<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="styles.css" />
    <title>CSS em Units Example</title>
  </head>
  <body>
    <div class="fixed-size-container">
      <p>
        This text is inside a container with a fixed font size. The border,
        margin, and padding of this container are all set in em units, relative
        to the container's font size.
      </p>
   