← I Deleted My Scroll-Lock Library's Ugly Hack. `scrollbar-gutter` Replaces It.Quiz
scrollbar-gutter: stop the modal flinch
Eight questions on why opening a modal shifts your page, and how scrollbar-gutter fixes it for good.
questions8
pass mark70%
resultsat the end
No account needed. Answer all 8 questions, then see your score with every answer explained and a reference to the spec or MDN — pass and you can claim a certificate.