diff --git a/crates/biome_css_parser/src/lexer/mod.rs b/crates/biome_css_parser/src/lexer/mod.rs
index f17c5c3e15ce..25ed5b2f63cf 100644
--- a/crates/biome_css_parser/src/lexer/mod.rs
+++ b/crates/biome_css_parser/src/lexer/mod.rs
@@ -1105,7 +1105,7 @@ impl<'src> CssLexer<'src> {
                     COMMENT
                 }
             }
-            Some(b'/') if self.options.allow_wrong_line_comments => {
+            Some(b'/') if self.options.allow_wrong_line_comments.unwrap_or_default() => {
                 self.advance(2);
 
                 while let Some(chr) = self.current_byte() {
diff --git a/crates/biome_css_parser/src/parser.rs b/crates/biome_css_parser/src/parser.rs
index 8ac7c9d81e61..d0b5633c5d6c 100644
--- a/crates/biome_css_parser/src/parser.rs
+++ b/crates/biome_css_parser/src/parser.rs
@@ -24,29 +24,29 @@ pub struct CssParserOptions {
     /// use `//` as a comment because it's javascript file.
     ///
     /// Defaults to `false`.
-    pub allow_wrong_line_comments: bool,
+    pub allow_wrong_line_comments: Option<bool>,
 
     /// Enables parsing of CSS Modules specific features.
     /// Defaults to `false`.
-    pub css_modules: bool,
+    pub css_modules: Option<bool>,
 }
 
 impl CssParserOptions {
     /// Allows the parser to parse wrong line comments.
     pub fn allow_wrong_line_comments(mut self) -> Self {
-        self.allow_wrong_line_comments = true;
+        self.allow_wrong_line_comments = Some(true);
         self
     }
 
     /// Enables parsing of css modules selectors.
     pub fn allow_css_modules(mut self) -> Self {
-        self.css_modules = true;
+        self.css_modules = Some(true);
         self
     }
 
     /// Checks if parsing of CSS Modules features is disabled.
     pub fn is_css_modules_disabled(&self) -> bool {
-        !self.css_modules
+        !self.css_modules.unwrap_or_default()
     }
 }
 
diff --git a/crates/biome_css_parser/tests/spec_test.rs b/crates/biome_css_parser/tests/spec_test.rs
index 65c60978beeb..e3864eb5ee8c 100644
--- a/crates/biome_css_parser/tests/spec_test.rs
+++ b/crates/biome_css_parser/tests/spec_test.rs
@@ -60,11 +60,11 @@ pub fn run(test_case: &str, _snapshot_name: &str, test_directory: &str, outcome_
 
         let settings = settings.languages.css.parser;
 
-        if settings.css_modules {
+        if settings.css_modules.unwrap_or_default() {
             options = options.allow_css_modules();
         }
 
-        if settings.allow_wrong_line_comments {
+        if settings.allow_wrong_line_comments.unwrap_or_default() {
             options = options.allow_wrong_line_comments();
         }
 
diff --git a/crates/biome_service/src/file_handlers/css.rs b/crates/biome_service/src/file_handlers/css.rs
index be33cf500130..e5b38e909ef7 100644
--- a/crates/biome_service/src/file_handlers/css.rs
+++ b/crates/biome_service/src/file_handlers/css.rs
@@ -81,8 +81,8 @@ impl Default for CssLinterSettings {
 #[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
 #[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
 pub struct CssParserSettings {
-    pub allow_wrong_line_comments: bool,
-    pub css_modules: bool,
+    pub allow_wrong_line_comments: Option<bool>,
+    pub css_modules: Option<bool>,
 }
 
 impl ServiceLanguage for CssLanguage {
diff --git a/crates/biome_service/src/settings.rs b/crates/biome_service/src/settings.rs
index c1595369818b..daea776f1c72 100644
--- a/crates/biome_service/src/settings.rs
+++ b/crates/biome_service/src/settings.rs
@@ -5,8 +5,8 @@ use biome_configuration::diagnostics::InvalidIgnorePattern;
 use biome_configuration::javascript::JsxRuntime;
 use biome_configuration::organize_imports::OrganizeImports;
 use biome_configuration::{
-    push_to_analyzer_rules, BiomeDiagnostic, CssConfiguration, FilesConfiguration,
-    FormatterConfiguration, JavascriptConfiguration, JsonConfiguration, LinterConfiguration,
+    push_to_analyzer_rules, BiomeDiagnostic, FilesConfiguration, FormatterConfiguration,
+    JavascriptConfiguration, JsonConfiguration, LinterConfiguration,
     OverrideFormatterConfiguration, OverrideLinterConfiguration,
     OverrideOrganizeImportsConfiguration, Overrides, PartialConfiguration, PartialCssConfiguration,
     PartialJavascriptConfiguration, PartialJsonConfiguration, PlainIndentStyle, Rules,
@@ -216,7 +216,7 @@ impl Settings {
         }
         // css settings
         if let Some(css) = configuration.css {
-            self.languages.css = CssConfiguration::from(css).into();
+            self.languages.css = css.into();
         }
 
         // NOTE: keep this last. Computing the overrides require reading the settings computed by the parent settings.
@@ -488,20 +488,25 @@ impl From<JsonConfiguration> for LanguageSettings<JsonLanguage> {
     }
 }
 
-impl From<CssConfiguration> for LanguageSettings<CssLanguage> {
-    fn from(css: CssConfiguration) -> Self {
+impl From<PartialCssConfiguration> for LanguageSettings<CssLanguage> {
+    fn from(css: PartialCssConfiguration) -> Self {
         let mut language_setting: LanguageSettings<CssLanguage> = LanguageSettings::default();
 
-        language_setting.parser.allow_wrong_line_comments = css.parser.allow_wrong_line_comments;
-        language_setting.parser.css_modules = css.parser.css_modules;
-
-        language_setting.formatter.enabled = Some(css.formatter.enabled);
-        language_setting.formatter.indent_width = css.formatter.indent_width;
-        language_setting.formatter.indent_style = css.formatter.indent_style.map(Into::into);
-        language_setting.formatter.line_width = css.formatter.line_width;
-        language_setting.formatter.line_ending = css.formatter.line_ending;
-        language_setting.formatter.quote_style = Some(css.formatter.quote_style);
-        language_setting.linter.enabled = Some(css.linter.enabled);
+        if let Some(parser) = css.parser {
+            language_setting.parser.allow_wrong_line_comments = parser.allow_wrong_line_comments;
+            language_setting.parser.css_modules = parser.css_modules;
+        }
+        if let Some(formatter) = css.formatter {
+            language_setting.formatter.enabled = formatter.enabled;
+            language_setting.formatter.indent_width = formatter.indent_width;
+            language_setting.formatter.indent_style = formatter.indent_style.map(Into::into);
+            language_setting.formatter.line_width = formatter.line_width;
+            language_setting.formatter.line_ending = formatter.line_ending;
+            language_setting.formatter.quote_style = formatter.quote_style;
+        }
+        if let Some(linter) = css.linter {
+            language_setting.linter.enabled = linter.enabled;
+        }
 
         language_setting
     }
@@ -1357,8 +1362,8 @@ fn to_css_language_settings(
     let parent_parser = &parent_settings.parser;
     language_setting.parser.allow_wrong_line_comments = parser
         .allow_wrong_line_comments
-        .unwrap_or(parent_parser.allow_wrong_line_comments);
-    language_setting.parser.css_modules = parser.css_modules.unwrap_or(parent_parser.css_modules);
+        .or(parent_parser.allow_wrong_line_comments);
+    language_setting.parser.css_modules = parser.css_modules.or(parent_parser.css_modules);
 
     language_setting
 }
diff --git a/crates/biome_unicode_table/src/tables.rs b/crates/biome_unicode_table/src/tables.rs
index 7700038e9f9c..2521478eca81 100644
--- a/crates/biome_unicode_table/src/tables.rs
+++ b/crates/biome_unicode_table/src/tables.rs
@@ -782,7 +782,7 @@ pub mod derived_property {
         ('𫝀', '𫠝'),
         ('𫠠', '𬺡'),
         ('𬺰', '𮯠'),
-        ('\u{2ebf0}', '\u{2ee5d}'),
+        ('𮯰', '𮹝'),
         ('丽', '𪘀'),
         ('𰀀', '𱍊'),
         ('𱍐', '𲎯'),
@@ -1448,7 +1448,7 @@ pub mod derived_property {
         ('𫝀', '𫠝'),
         ('𫠠', '𬺡'),
         ('𬺰', '𮯠'),
-        ('\u{2ebf0}', '\u{2ee5d}'),
+        ('𮯰', '𮹝'),
         ('丽', '𪘀'),
         ('𰀀', '𱍊'),
         ('𱍐', '𲎯'),