Creating a Material Web Page with Just CDN Libraries

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Login Page</title>
    <!-- Import Google Material Web Components CSS -->
    <link
      rel="stylesheet"
      href="https://unpkg.com/material-components-web@latest/dist/material-components-web.min.css"
    />
    <!-- Import Roboto font from Google Fonts -->
    <link
      rel="stylesheet"
      href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap"
    />
    <style>
      body {
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        background-color: #f5f5f5;
        font-family: 'Roboto', sans-serif;
      }

      .login-card {
        width: 400px;
        padding: 40px;
        background-color: #fff;
        border-radius: 5px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      }

      .login-title {
        text-align: center;
        margin-bottom: 30px;
        font-size: 24px;
        font-weight: 500;
      }

      .mdc-text-field {
        width: 100%;
        margin-bottom: 20px;
      }

      .mdc-button {
        width: 100%;
      }
    </style>
  </head>
  <body>
    <div class="login-card">
      <h2 class="login-title">Login</h2>
      <form>
        <div class="mdc-text-field mdc-text-field--outlined">
          <input
            class="mdc-text-field__input"
            id="username"
            type="text"
            required
          />
          <div class="mdc-notched-outline">
            <div class="mdc-notched-outline__leading"></div>
            <div class="mdc-notched-outline__notch">
              <label for="username" class="mdc-floating-label">Username</label>
            </div>
            <div class="mdc-notched-outline__trailing"></div>
          </div>
        </div>
        <div class="mdc-text-field mdc-text-field--outlined">
          <input
            class="mdc-text-field__input"
            id="password"
            type="password"
            required
          />
          <div class="mdc-notched-outline">
            <div class="mdc-notched-outline__leading"></div>
            <div class="mdc-notched-outline__notch">
              <label for="password" class="mdc-floating-label">Password</label>
            </div>
            <div class="mdc-notched-outline__trailing"></div>
          </div>
        </div>
        <button class="mdc-button mdc-button--raised" type="submit">
          <span class="mdc-button__label">Login</span>
        </button>
      </form>
    </div>

    <!-- Import Google Material Web Components JavaScript -->
    <script src="https://unpkg.com/material-components-web@latest/dist/material-components-web.min.js"></script>
    <script>
      // Initialize MDC components after page load
      window.addEventListener('load', function () {
        // Initialize text fields
        const textFields = document.querySelectorAll('.mdc-text-field');
        for (const textField of textFields) {
          mdc.textField.MDCTextField.attachTo(textField);
        }

        // Initialize button
        const button = document.querySelector('.mdc-button');
        mdc.ripple.MDCRipple.attachTo(button);
      });
    </script>
  </body>
</html>

Explanation:

Include Material Web Components:

Include the Material Web Components CSS and JavaScript files from the CDN.
Include the Roboto font from Google Fonts for the Material Design look.

Basic HTML Structure:

Create a div with class login-card to hold the login form.
Inside the card, add a title (h2) and the login form (form).

Text Fields:

Use mdc-text-field and related classes to create outlined text fields:
- mdc-text-field: The main container for the text field.
- mdc-text-field--outlined: Style it as an outlined text field.
- mdc-text-field__input: The actual input element.
- mdc-notched-outline: Creates the outline and floating label effect.
- mdc-floating-label: The floating label for the input.

Button:

Use mdc-button and mdc-button--raised to create a raised button.
mdc-button__label wraps the button text.

JavaScript Initialization:

After the page loads, initialize the Material Web Components using JavaScript:
- Select all text fields using querySelectorAll('.mdc-text-field').
- Loop through each text field and attach mdc.textField.MDCTextField to it.
- Select the button and attach mdc.ripple.MDCRipple for the ripple effect.

To use this code:

Save the code as an HTML file (e.g., login.html).
Open the HTML file in your web browser.

The result:

Material Web Page