diff --git a/README.md b/README.md
index f44d7b3c..75972751 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ An extremely fast CSS parser, transformer, and minifier written in Rust. Use it
   - CSS Nesting
   - Custom media queries (draft spec)
   - Logical properties
-  * [Color Level 5](https://drafts.csswg.org/css-color-5/)
+  - [Color Level 5](https://drafts.csswg.org/css-color-5/)
     - `color-mix()` function
     - Relative color syntax, e.g. `lab(from purple calc(l * .8) a b)`
   - [Color Level 4](https://drafts.csswg.org/css-color-4/)
@@ -68,7 +68,7 @@ Lightning CSS can be used from [Parcel](https://parceljs.org), as a standalone l
 <img width="680" alt="performance and build size charts" src="https://user-images.githubusercontent.com/19409/189022599-28246659-f94a-46a4-9de0-b6d17adb0e22.png#gh-light-mode-only">
 <img width="680" alt="performance and build size charts" src="https://user-images.githubusercontent.com/19409/189022693-6956b044-422b-4f56-9628-d59c6f791095.png#gh-dark-mode-only">
 
-```
+```sh
 $ node bench.js bootstrap-4.css
 cssnano: 544.809ms
 159636 bytes
diff --git a/src/lib.rs b/src/lib.rs
index 86f3d0df..c32d0fd8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15295,6 +15295,50 @@ mod tests {
         ..Browsers::default()
       },
     );
+    prefix_test(
+      r#"
+      .foo {
+        -webkit-appearance: none;
+        appearance: textfield;
+      }
+      "#,
+      indoc! {r#"
+      .foo {
+        -webkit-appearance: none;
+        -moz-appearance: textfield;
+        appearance: textfield;
+      }
+      "#},
+      Browsers {
+        chrome: Some(87 << 16),
+        firefox: Some(78 << 16),
+        safari: Some(14 << 16),
+        edge: Some(88 << 16),
+        ..Browsers::default()
+      },
+    );
+    prefix_test(
+      r#"
+      .foo {
+        appearance: textfield;
+        -webkit-appearance: none;
+      }
+      "#,
+      indoc! {r#"
+      .foo {
+        -moz-appearance: textfield;
+        appearance: textfield;
+        -webkit-appearance: none;
+      }
+      "#},
+      Browsers {
+        chrome: Some(87 << 16),
+        firefox: Some(78 << 16),
+        safari: Some(14 << 16),
+        edge: Some(88 << 16),
+        ..Browsers::default()
+      },
+    );
   }
 
   #[test]