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title | introduction |
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Breaking Change: -moz-document | Firefox used to have a @-moz-document rule requiring special parsing. As support is removed from Firefox, Sass is in the process of removing support for parsing them. |
Sass has historically supported a special parsing for the @-moz-document
rule.
As Firefox dropped support for them, Sass will also drop support for the
special parsing and will treat it as an unknown at-rule.
There is one exception: an empty url prefix function is still allowed, as that's used in a hack targetting Firefox.
{% codeExample 'moz-document' %} @-moz-document url-prefix() { .error { color: red; } }
@-moz-document url-prefix() .error color: red {% endcodeExample %}
Transition Period
{% compatibility 'dart: "1.7.2"', 'libsass: false', 'ruby: false' %}{% endcompatibility %}
First, we'll emit deprecation warnings for all usages of @-moz-document
except
for the empty url-prefix hack.
In Dart Sass 2.0, @-moz-document
will be treated as an unknown at-rule.