# Content Security Policy > This page is to help you get around the CSP error: "Refused to apply inline style because it violates the following Content Security Policy directive: "style-src 'self'"." > A huge thankyou to [@Zweder](https://github.com/Zweder) for driving this effort Content Security Policy (CSP) is a way of controlling where a browser can download assets from, as well as what those assets are allowed to do. Background reading on CSP - [Google guide](https://developer.chrome.com/extensions/contentSecurityPolicy) - [MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP) - [Helmetjs guide](https://helmetjs.github.io/docs/csp/) `react-beautiful-dnd` creates a `