https://www.gov.uk/service-manual/technology/using-progressive-enhancement https://www.gov.uk/service-manual/technology/using-progressi... > You should not ass

https://www.gov.uk/service-manual/technology/using-progressive-enhancement https://www.gov.uk/service-manual/technology/using-progressi... > You should not assume the reason for designing a service that works without CSS or JavaScript is because a user chooses to switch these off. > There are many situations when extra layers can fail to load or are filtered, for example: https://technology.blog.gov.uk/2016/09/19/why-we-use-progressive-enhancement-to-build-gov-uk/ https://technology.blog.gov.uk/2016/09/19/why-we-use-progres... > It’s important to understand that it’s often not the conscious choice of users to arrive at your site without JavaScript. We did some research and discovered that 0.9% GOV.UK visits are by people who don’t have JavaScript available and haven’t chosen to turn it off.