This means designing your page well enough to not only display but work properly over the several browsers that are out on the web. Many developers fail to consider the subtle differences that web browsers have when it comes to page function. Firefox being the most widely used browser is mostly covered but IE with Microsoft’s branded technology tends to require a bit more to get the ball rolling.
Browsers such as IE7, IE8, Opera, Safari, Firefox, Chrome and some others are the most commonly used browsers so taking time to install copies and review code will go a long way to help your page function flawlessly across borders.