How to set compatibility mode for Firefox browser

Many times, browsers can only open some pages if they are compatible, and many users often use Firefox with the blue flag when they don't know how to set the compatibility mode. So, how does Firefox set compatibility mode? Let's take a look! Open Firefox, open Baidu, search IE tab Firefox plugin, the Firefox Community plugin will appear, click to enter; or enter addons.mozilla.org/en-US/firefox/search/? q=ietab. Click Add. The installation is complete and the browser is restarted. When browsing the webpage, you can right-click the pop-up dialog box and select the IE tab page to browse the webpage using the IE kernel. For example, Baidu experience editor can not drag and drop the image when opening the page. It can be dragged under the single IE tab.