When the elements are not present , many browsers render using browser - specific rules that vary among browser types which is sometimes referred to as rendering in " quirks mode " , and can therefore result in unpredictable rendering 如果不存在这些元素,许多浏览器将使用浏览器特定规则来进行呈现,所使用的规则根据浏览器类型的不同而异(有时也称为以“突发模式”呈现) ,因此会导致不可预测的呈现方式。
In computing, quirks mode refers to a technique used by some web browsers for the sake of maintaining backward compatibility with web pages designed for older browsers, instead of strictly complying with W3C and IETF standards in standards mode.