<!DOCTYPE html><html><head><metacharset="utf-8"><title>CSS Backgrounds and Borders Module Level 3: parsing background-attachment with invalid values</title><linkrel="author"title="Eric Willigers"href="mailto:ericwilligers@chromium.org"><linkrel="help"href="https://drafts.csswg.org/css-backgrounds/#background-attachment"><metaname="assert"content="background-attachment supports only the grammar '<attachment>#'."><scriptsrc="/resources/testharness.js"></script><scriptsrc="/resources/testharnessreport.js"></script><scriptsrc="/css/support/parsing-testcommon.js"></script></head><body><script>test_invalid_value("background-attachment","auto");test_invalid_value("background-attachment","local, none");</script></body></html>