LetsTalk/index.html at main · luisspassos/LetsTalk · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

      .box {
        width: 100vw;
        height: 200vh;
      }

      .first {
        background-color: red;
      }

      .second {
        background-color: blue;
      }

      .third {
        background-color: yellowgreen;
      }
    </style>
  </head>
  <body>
    <div class="box first"></div>
    <div class="box second"></div>
    <div class="box third"></div>
    <button></button>
  </body>
  <script>
    const btn = document.querySelector('button');

    console.log(btn.disabled);
  </script>
</html>