Brief: Develop a basic login form for “SecureLogin,” a fictional secure login service. The form should prompt users for their username and password, with validation to ensure fields are filled. If validation fails, display a red error message. Design the form to be clean and professional with a white background (#ffffff), dark blue text (#34495E), and a green submit button (#2ECC71). Requirements: Form Fields: Username and password input fields. Submit Button: “Login” button, styled with bold text. Error Handling: Display error if fields are empty or invalid. Typography: Button text in bold, 18px, error messages in red, 14px. Basic form validation to check inputs before submission. Responsive Design: Layout adapts for smaller screens with full-width input fields.