Responsive web design will make your website more user friendly to devices like Phones, Tabs, Laptops and Desktops. One design for all devices.
As a professional developer I always try to increase my skills on web development. I always assure perfect server-side PHP program for websites.
Clean code for Web Design and Development will let other Developers and Designers to write, read and maintain the code again so easily.
Custom small online/offline softwares like Inventory Software, Educational Software, Data Management Software, Public Services Software etc.