Responsive landing pages adapt to different screen sizes and provide an optimal viewing experience across devices. A responsive page will look good on any device without needing to scroll or resize text. It is important for user experience and conversions, as responsive pages convert 40% more than unresponsive pages. This document demonstrates how to create a responsive landing page in LeadSquared using various blocks like images, text, forms, features and testimonials and provides tips on formatting, styling and customization.