Kansas – Multi-Purpose Business Tumblr Theme by ThemeSunday. Kansas is a creative Tumblr theme for SaaS, software, startup, mobile app, agency and related products & services. Kansas is loaded with tons of features & options that give its users real flexibility to create a dynamic, professional website in no time. It is 100% responsive and looks stunning on all types of screens and devices. Kansas is a better way to present and promote your start-up or boosting your current agency website. Users will love your Kansas-driven site as it gives them a unique user experience (UX), clean, modern and beautiful design. This theme is surely a great way to kickstart your new startup project or website.