If you support the latest browsers only, what modern features do you use? For example, do you use CSS Grid? Or variable width fonts?<p>If you still need to support older browsers, what are the reasons for that?
Depends on the situation. I worked on a site for lawyers and we needed to make it work in IE11, because that was the site all the lawyers used.<p>I was just at a bank the other day and saw IE being used. It is still 8% of the wider market: <a href="https://www.netmarketshare.com/browser-market-share.aspx?options=%7B%22filter%22%3A%7B%22%24and%22%3A%5B%7B%22deviceType%22%3A%7B%22%24in%22%3A%5B%22Desktop%2Flaptop%22%5D%7D%7D%5D%7D%2C%22dateLabel%22%3A%22Trend%22%2C%22attributes%22%3A%22share%22%2C%22group%22%3A%22browser%22%2C%22sort%22%3A%7B%22share%22%3A-1%7D%2C%22id%22%3A%22browsersDesktop%22%2C%22dateInterval%22%3A%22Monthly%22%2C%22dateStart%22%3A%222018-09%22%2C%22dateEnd%22%3A%222019-08%22%2C%22segments%22%3A%22-1000%22%7D" rel="nofollow">https://www.netmarketshare.com/browser-market-share.aspx?opt...</a>
To piggyback on mooreds - you need a baseline to see what your target market uses (if you’re making the business decisions)<p>An easy answer is to add Google Analytics to your site and support browsers that account for greater than 0.5% of your visitors