Cross Browser & Responsive (Mobile Device compatible) web development
Cross Browser Web Design has almost become mandatory for a modern web3 standards website. So when you develop your site it needs to be checked across various browsers, so that all the major functionality gives you accurate results in different browsers.
Now a days the mobile revolution is taking off and the number of visitors who are accessing web pages from mobile devices of different types is higher than ever, and growing day by day. For a standard website, it has to be highly accessible to mobile users unless you want to miss out on a large and possibly crucial segment of your visitor.