Here at GroupDocs we take front end and web development in general very seriously. We constantly strive to improve our products and because of that, we try to keep up with the latest trends and best practices, not always an easy thing. But that doesn’t apply only to our front end department of course. Each and every one of us is trying to improve his skills and is eager to try different techniques that could result in better and more optimal outcomes....test-icon:before { content: "\\61"; } <div class="icon-large-blue"...\\\[data-icon\\\]:before { content: attr(data-icon); Which approach...