I've created an spfx webpart using the react-office-ui-fabric DetailsList. It works fine, but the details list is quite wide. On a modern page the framework is rendeing my webpart in a div that is set to max-width 1280ox which causes a horizontal scroll bar to appear.
It seems to do that for all webparts. Is there a way to override the max-width on a modern page? Works fine on a classic page/