diff --git a/mediaqueries-5/Overview.bs b/mediaqueries-5/Overview.bs index a6d32bc3c4e..3ad02ede47a 100644 --- a/mediaqueries-5/Overview.bs +++ b/mediaqueries-5/Overview.bs @@ -2273,25 +2273,11 @@ Detecting UA-supplied navigation controls: the 'nav-controls' feature } } - As this media feature can be used in a [=boolean context=], - the same example can be written with shorter syntax: - -
- @media (nav-controls) {
- #back-button {
- display: none;
- }
- }
-
- Note: Theoretically, the two are not strictly equivalent,
- as there could be new values in a future extension of this media feature
- other than ''back''
- that could match when ''back'' doesn't.
- In that case, using the 'nav-controls' feature in a boolean context could be misleading.
- However, given that navigation back is arguably the most fundamental navigation operation,
- the CSS Working Group does not anticipate
- user interfaces with explicit navigation controls but no back button,
- so this problem is not expected to occur in practice.
+ Note: This media feature can also be used in a [=boolean context=], e.g.,
+ @media (nav-controls)
. However, as there could be new values in a future
+ extension of this media feature other than ''back'', use of the ''nav-controls'' feature in a boolean
+ context could cause the page to incorrectly interpret some other control as a "back" button, and its
+ usage is therefore discouraged.
Whether [=obviously discoverable=] controls are active does not impact the evaluation of this media feature.