17/index.html

<!DOCTYPE html>
<html lang="pt-br">
  <head>
    <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=Lato:wght@400;700&display=swap"
      rel="stylesheet"
    />

    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="style.css" />
    <title>Date Picker</title>

    <script src="https://unpkg.com/@phosphor-icons/web"></script>
  </head>
  <body>
    <div class="box" id="app">
      <header>
        <i class="ph-bold ph-caret-left"></i>
        <span></span>
        <i class="ph-bold ph-caret-right"></i>
      </header> 
      <main></main>
    </div>
    <script src="script.js"></script>
  </body>
</html>