Williero/index.html

## index.html
<html>

<head>
  <title>Web3 Metamask Login</title>
  <link href="https://unpkg.com/tailwindcss@^2/dist/tailwind.min.css" rel="stylesheet">
</head>

<body class="flex w-screen h-screen justify-center items-center">
  <div class="flex-col space-y-2 justify-center items-center">
    <button id='loginButton' onclick="" class="mx-auto rounded-md p-2 bg-purple-500 text-white">
      Login with MetaMask
    </button>
    <p id='userWallet' class='text-lg text-gray-600 my-2'></p>
  </div>

  <script>
    window.userWalletAddress = null
    const loginButton = document.getElementById('loginButton')
    const userWallet = document.getElementById('userWallet')

    function toggleButton() {
      if (!window.ethereum) {
        loginButton.innerText = 'MetaMask is not installed'
        loginButton.classList.remove('bg-purple-500', 'text-white')
        loginButton.classList.add('bg-gray-500', 'text-gray-100', 'cursor-not-allowed')
        return false
      }

      loginButton.addEventListener('click', loginWithMetaMask)
    }

    async function loginWithMetaMask() {
      const accounts = await window.ethereum.request({ method: 'eth_requestAccounts' })
        .catch((e) => {
          console.error(e.message)
          return
        })
      if (!accounts) { return }

      window.userWalletAddress = accounts[0]
      userWallet.innerText = window.userWalletAddress
      loginButton.innerText = 'Sign out of MetaMask'

      loginButton.removeEventListener('click', loginWithMetaMask)
      setTimeout(() => {
        loginButton.addEventListener('click', signOutOfMetaMask)
      }, 200)
    }

    function signOutOfMetaMask() {
      window.userWalletAddress = null
      userWallet.innerText = ''
      loginButton.innerText = 'Sign in with MetaMask'

      loginButton.removeEventListener('click', signOutOfMetaMask)
      setTimeout(() => {
        loginButton.addEventListener('click', loginWithMetaMask)
      }, 200)
    }

    window.addEventListener('DOMContentLoaded', () => {
      toggleButton()
    });
  </script>
</body>

</html>
	<html>

	<head>
	<title>Web3 Metamask Login</title>
	<link href="https://unpkg.com/tailwindcss@^2/dist/tailwind.min.css" rel="stylesheet">
	</head>

	<body class="flex w-screen h-screen justify-center items-center">
	<div class="flex-col space-y-2 justify-center items-center">
	<button id='loginButton' onclick="" class="mx-auto rounded-md p-2 bg-purple-500 text-white">
	Login with MetaMask
	</button>
	<p id='userWallet' class='text-lg text-gray-600 my-2'></p>
	</div>

	<script>
	window.userWalletAddress = null
	const loginButton = document.getElementById('loginButton')
	const userWallet = document.getElementById('userWallet')

	function toggleButton() {
	if (!window.ethereum) {
	loginButton.innerText = 'MetaMask is not installed'
	loginButton.classList.remove('bg-purple-500', 'text-white')
	loginButton.classList.add('bg-gray-500', 'text-gray-100', 'cursor-not-allowed')
	return false
	}

	loginButton.addEventListener('click', loginWithMetaMask)
	}

	async function loginWithMetaMask() {
	const accounts = await window.ethereum.request({ method: 'eth_requestAccounts' })
	.catch((e) => {
	console.error(e.message)
	return
	})
	if (!accounts) { return }

	window.userWalletAddress = accounts[0]
	userWallet.innerText = window.userWalletAddress
	loginButton.innerText = 'Sign out of MetaMask'

	loginButton.removeEventListener('click', loginWithMetaMask)
	setTimeout(() => {
	loginButton.addEventListener('click', signOutOfMetaMask)
	}, 200)
	}

	function signOutOfMetaMask() {
	window.userWalletAddress = null
	userWallet.innerText = ''
	loginButton.innerText = 'Sign in with MetaMask'

	loginButton.removeEventListener('click', signOutOfMetaMask)
	setTimeout(() => {
	loginButton.addEventListener('click', loginWithMetaMask)
	}, 200)
	}

	window.addEventListener('DOMContentLoaded', () => {
	toggleButton()
	});
	</script>
	</body>

	</html>