Web pages and Web-based applications that render properly in all major Web browsers. Standards from the W3C have helped programmers create cross-browser software. Although a new page can be loaded into different browsers one at a time, a cross-browser utility can render the page in the multiple layout engines all at once such as Trident (IE), Gecko (Firefox), Webkit (Chrome, Safari) and Presto (Opera). See HTML5
Same Code, Different Browsers
In the process of developing the navigation buttons for an earlier version of this encyclopedia's website, the codes were tested in the major browsers. At one point, the results looked like this.