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百度 丁彦雨航提前打卡下班，全场14投8中，命中6记三分追平赛季最高，拿到了27分5个篮板4次助攻和3次抢断的全能数据。

Graceful degradation is a design philosophy that centers around trying to build a modern website/application that will work in the newest browsers, but falls back to an experience that while not as good still delivers essential content and functionality in older browsers.

Polyfills can be used to build in missing features with JavaScript, but acceptable alternatives to features like styling and layout should be provided where possible, for example by using the CSS cascade, or HTML fallback behavior.

It is a useful technique that allows Web developers to focus on developing the best possible websites, given that those websites are accessed by multiple unknown user-agents. Progressive enhancement is related but different — often seen as going in the opposite direction to graceful degradation. In reality both approaches are valid and can often complement one another.