* fix: Ensure CSS support is checked more robustly * Apply formatting changes * apply eslint changes * Update packages/rrweb/src/record/observer.ts Co-authored-by: Justin Halsall <Juice10@users.noreply.github.com> * fix: do not use window in module scope --------- Co-authored-by: mydea <mydea@users.noreply.github.com> Co-authored-by: Justin Halsall <Juice10@users.noreply.github.com>