Python
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Ad Scheduler - Home</title>
    <link rel="stylesheet" href="css/styles.css">
</head>
<body>
    <header>
        <h1>Ad Scheduler</h1>
    </header>
    <main>
        <h2>Welcome!</h2>
        <a href="create-account.html">Sign Up</a>
    </main>
</body>
</html>
line 1
    <!DOCTYPE html>
    ^
SyntaxError: invalid syntax
# AdScheduler Plus
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