2019/60/day-66/index.html

<!DOCTYPE html>
<html lang="pt-br">
  <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>Day 66</title>
    <style>
      *, *:before, *:after { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing:border-box; }
      html { -webkit-box-sizing:border-box; -moz-box-sizing:border-box; box-sizing:border-box; font-size: 62.5%; }
      * { margin: 0; padding: 0; list-style: none; outline: none; }
      body { background: #000; color: #fff; font-family: Arial, Helvetica, sans-serif; }

      .container { margin: 20px auto; max-width: 992px; width: 100%; }

      .title { font-size: 5rem; }
    </style>
    <link rel="stylesheet" type="text/css" href="./day-42.css">
  </head>
  <body>
    <div class="container">
      <form class="form">
        <p class="form-group">
          <label class="form-label">Usuário</label>
          <input class="form-field" name="username" type="text">
        </p>
        <p class="form-group">
          <label class="form-label">Password</label>
          <input class="form-field" name="password" type="password">
        </p>
        <p><button class="form-submit" type="submit">Entrar</button></p>
      </form>
      <script>
        document.querySelector('form').addEventListener("submit", evt => {
          const form = document.forms[0];
          const username = form.querySelector('input[name="username"]').value;
          const password = form.querySelector('input[name="password"]').value;

          if (username === 'admin' && password === 'admin') {
            document.querySelector('.container').innerHTML = `<h1 class="title">Olá</h1>`;
          }
        });
      </script>
  </body>
</html>