diff --git a/Cargo.toml b/Cargo.toml
index 5d8ecfc5e..2c712a804 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,6 +28,8 @@ spectest = ["yaml-rust", "deunicode", "hrx-get", "regex"]
 unimplemented_args = []
 
 [dependencies]
+arc-swap = "1.5.0"
+fastrand = "1.4"
 lazy_static = "1.0"
 nom = { version = "7.0", default-features = false }
 nom_locate = "4.0"
@@ -35,12 +37,11 @@ num-bigint = { version = "0.4.0", default-features = false, features = ["std"] }
 num-integer = "0.1.42"
 num-rational = { version = "0.4.0", default-features = false }
 num-traits = "^0.2.0"
-fastrand = "1.4"
+tracing = "0.1.34"
 clap = { version = "3.0.0", features = ["derive", "wrap_help"], optional = true }
 deunicode = { version = "1.0", optional = true }
 hrx-get = { version = "0.2.0", optional = true }
 regex = { version = "1.1.0", optional = true }
-tracing = "0.1.34"
 yaml-rust = { version = "0.4", optional = true }
 
 [badges]
diff --git a/src/output/transform.rs b/src/output/transform.rs
index 0b606134f..39235e731 100644
--- a/src/output/transform.rs
+++ b/src/output/transform.rs
@@ -10,7 +10,7 @@ use crate::css::{BodyItem, Comment, Import, Property, Rule, Selectors};
 use crate::error::{Error, Invalid};
 use crate::file_context::FileContext;
 use crate::parser::Parsed;
-use crate::sass::{get_global_module, Expose, Item, Name, UseAs};
+use crate::sass::{get_global_module, Expose, Item, UseAs};
 use crate::value::ValueRange;
 use crate::ScopeRef;
 use std::io::Write;
@@ -364,9 +364,7 @@ fn handle_item(
             }
         }
         Item::Content(args, pos) => {
-            if let Some(content) =
-                scope.get_mixin(&Name::from_static("%%BODY%%"))
-            {
+            if let Some(content) = scope.get_content() {
                 let mixin = content.get(
                     "@content",
                     scope,
diff --git a/src/sass/functions/meta.rs b/src/sass/functions/meta.rs
index 40e8dca20..ac749a876 100644
--- a/src/sass/functions/meta.rs
+++ b/src/sass/functions/meta.rs
@@ -3,7 +3,7 @@ use super::{
     CheckedArg, Error, FunctionMap,
 };
 use crate::css::{CallArgs, CssString, Value};
-use crate::sass::{Function, MixinDecl, Name};
+use crate::sass::{Function, MixinDecl};
 use crate::value::Quotes;
 use crate::{Format, Scope, ScopeRef};
 
@@ -66,8 +66,7 @@ pub fn create_module() -> Scope {
         }
     });
     def!(f, content_exists(), |s| {
-        let content = call_scope(s).get_mixin(&Name::from_static("%%BODY%%"));
-        if let Some(content) = content {
+        if let Some(content) = call_scope(s).get_content() {
             Ok((!content.is_no_body()).into())
         } else {
             Err(Error::error(
diff --git a/src/sass/mixin.rs b/src/sass/mixin.rs
index 35b3fd3d5..ce2fd10ce 100644
--- a/src/sass/mixin.rs
+++ b/src/sass/mixin.rs
@@ -143,13 +143,10 @@ impl Mixin {
         scope: &ScopeRef,
         body: &Option<Callable>,
     ) {
-        self.scope.define_mixin(
-            Name::from_static("%%BODY%%"),
-            match body {
-                Some(body) => body.closure(scope).into(),
-                None => MixinDecl::NoBody,
-            },
-        )
+        self.scope.define_content(match body {
+            Some(body) => body.closure(scope).into(),
+            None => MixinDecl::NoBody,
+        })
     }
 }
 
diff --git a/src/variablescope.rs b/src/variablescope.rs
index d34622690..2574771ff 100644
--- a/src/variablescope.rs
+++ b/src/variablescope.rs
@@ -4,6 +4,7 @@ use crate::error::Invalid;
 use crate::output::Format;
 use crate::sass::{Expose, Function, Item, MixinDecl, Name, UseAs};
 use crate::{Error, SourcePos};
+use arc_swap::ArcSwapOption;
 use lazy_static::lazy_static;
 use std::collections::BTreeMap;
 use std::ops::Deref;
@@ -218,6 +219,8 @@ pub struct Scope {
     selectors: Option<Selectors>,
     forward: Mutex<Option<ScopeRef>>,
     format: Format,
+    /// The thing to use for `@content` in a mixin.
+    content: ArcSwapOption<MixinDecl>,
     // Set of files currently loading. Only used in the root scope.
     loading: Mutex<BTreeMap<String, SourcePos>>,
 }
@@ -238,6 +241,7 @@ impl<'a> Scope {
             selectors: None,
             forward: Default::default(),
             format,
+            content: None.into(),
             loading: Default::default(),
         }
     }
@@ -270,6 +274,7 @@ impl<'a> Scope {
             selectors: None,
             forward: Default::default(),
             format,
+            content: None.into(),
             loading: Default::default(),
         }
     }
@@ -285,6 +290,7 @@ impl<'a> Scope {
             selectors: Some(selectors),
             forward: Default::default(),
             format,
+            content: None.into(),
             loading: Default::default(),
         }
     }
@@ -633,6 +639,16 @@ impl<'a> Scope {
             self.loading.lock().unwrap().remove(name);
         }
     }
+
+    pub(crate) fn define_content(&self, body: MixinDecl) {
+        self.content.store(Some(Arc::new(body)));
+    }
+    pub(crate) fn get_content(&self) -> Option<MixinDecl> {
+        self.content
+            .load_full()
+            .map(|c| (*c).clone())
+            .or_else(|| self.parent.as_ref().and_then(|p| p.get_content()))
+    }
 }
 
 #[cfg(test)]