diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,9 @@
 CHANGELOG
 
+  0.16.1:
+    - Add support for overscroll-behaviour
+    Thanks to Sylvain Henry
+
   0.16.0:
     - Add grid size and location support.
     - Derive `Stretch` for justified content
diff --git a/clay.cabal b/clay.cabal
--- a/clay.cabal
+++ b/clay.cabal
@@ -1,5 +1,5 @@
 Name:     clay
-Version:  0.16.0
+Version:  0.16.1
 Synopsis: CSS preprocessor as embedded Haskell.
 Description:
   Clay is a CSS preprocessor like LESS and Sass, but implemented as an embedded
@@ -33,7 +33,11 @@
   GHC==8.10.7,
   GHC==9.0.2,
   GHC==9.2.2,
-  GHC==9.4.2
+  GHC==9.4.2,
+  GHC==9.6.6,
+  GHC==9.8.1,
+  GHC==9.10.1,
+  GHC==9.12.1
 
 Source-Repository head
   Type:     git
diff --git a/src/Clay/Background.hs b/src/Clay/Background.hs
--- a/src/Clay/Background.hs
+++ b/src/Clay/Background.hs
@@ -145,13 +145,12 @@
 -------------------------------------------------------------------------------
 
 newtype BackgroundSize = BackgroundSize Value
-  deriving (Val, Other, Inherit)
+  deriving (Val, Other, Inherit, Contain)
 
 instance Auto BackgroundSize where auto = auto `by` auto
 
-contain, cover :: BackgroundSize
+cover :: BackgroundSize
 
-contain = BackgroundSize "contain"
 cover   = BackgroundSize "cover"
 
 by :: Size a -> Size b -> BackgroundSize
diff --git a/src/Clay/Common.hs b/src/Clay/Common.hs
--- a/src/Clay/Common.hs
+++ b/src/Clay/Common.hs
@@ -15,17 +15,20 @@
 
 -------------------------------------------------------------------------------
 
-class All      a where all      :: a
-class Auto     a where auto     :: a
-class Baseline a where baseline :: a
-class Center   a where center   :: a
-class Inherit  a where inherit  :: a
-class None     a where none     :: a
-class Normal   a where normal   :: a
-class Visible  a where visible  :: a
-class Hidden   a where hidden   :: a
-class Initial  a where initial  :: a
-class Unset    a where unset    :: a
+class All         a where all         :: a
+class Auto        a where auto        :: a
+class Baseline    a where baseline    :: a
+class Center      a where center      :: a
+class Inherit     a where inherit     :: a
+class None        a where none        :: a
+class Normal      a where normal      :: a
+class Visible     a where visible     :: a
+class Hidden      a where hidden      :: a
+class Initial     a where initial     :: a
+class Unset       a where unset       :: a
+class Contain     a where contain     :: a
+class Revert      a where revert      :: a
+class RevertLayer a where revertLayer :: a
 
 -- | The other type class is used to escape from the type safety introduced by
 -- embedding CSS properties into the typed world of Clay. `Other` allows you to
@@ -55,19 +58,28 @@
 initialValue = "initial"
 unsetValue :: Value
 unsetValue = "unset"
+containValue :: Value
+containValue = "contain"
+revertValue :: Value
+revertValue = "revert"
+revertLayerValue :: Value
+revertLayerValue = "revert-layer"
 
-instance All      Value where all      = allValue
-instance Auto     Value where auto     = autoValue
-instance Baseline Value where baseline = baselineValue
-instance Center   Value where center   = centerValue
-instance Inherit  Value where inherit  = inheritValue
-instance Normal   Value where normal   = normalValue
-instance None     Value where none     = noneValue
-instance Visible  Value where visible  = visibleValue
-instance Hidden   Value where hidden   = hiddenValue
-instance Other    Value where other    = id
-instance Initial  Value where initial  = initialValue
-instance Unset    Value where unset    = unsetValue
+instance All         Value where all         = allValue
+instance Auto        Value where auto        = autoValue
+instance Baseline    Value where baseline    = baselineValue
+instance Center      Value where center      = centerValue
+instance Inherit     Value where inherit     = inheritValue
+instance Normal      Value where normal      = normalValue
+instance None        Value where none        = noneValue
+instance Visible     Value where visible     = visibleValue
+instance Hidden      Value where hidden      = hiddenValue
+instance Other       Value where other       = id
+instance Initial     Value where initial     = initialValue
+instance Unset       Value where unset       = unsetValue
+instance Contain     Value where contain     = containValue
+instance Revert      Value where revert      = revertValue
+instance RevertLayer Value where revertLayer = revertLayerValue
 
 -------------------------------------------------------------------------------
 
diff --git a/src/Clay/Display.hs b/src/Clay/Display.hs
--- a/src/Clay/Display.hs
+++ b/src/Clay/Display.hs
@@ -34,6 +34,15 @@
 , scroll
 , overflow, overflowX, overflowY
 
+-- * Overscroll
+, Overscroll
+, overscrollBehavior
+, overscrollBehavior2
+, overscrollBehaviorX
+, overscrollBehaviorY
+, overscrollBehaviorBlock
+, overscrollBehaviorInline
+
 -- * Visibility.
 
 , Visibility
@@ -182,6 +191,30 @@
 overflow  = key "overflow"
 overflowX = key "overflow-x"
 overflowY = key "overflow-y"
+
+-------------------------------------------------------------------------------
+
+newtype Overscroll = Overscroll Value
+  deriving (Val, Other, None, Auto, Contain, Inherit, Initial, Unset, Revert, RevertLayer)
+
+-- | Specify both X and Y overscroll at once
+overscrollBehavior :: Overscroll -> Css
+overscrollBehavior = key "overscroll-behavior"
+
+overscrollBehavior2 :: Overscroll -> Overscroll -> Css
+overscrollBehavior2 x y = key "overscroll-behavior" (x ! y)
+
+overscrollBehaviorX :: Overscroll -> Css
+overscrollBehaviorX = key "overscroll-behavior-x"
+
+overscrollBehaviorY :: Overscroll -> Css
+overscrollBehaviorY = key "overscroll-behavior-y"
+
+overscrollBehaviorBlock :: Overscroll -> Css
+overscrollBehaviorBlock = key "overscroll-behavior-block"
+
+overscrollBehaviorInline :: Overscroll -> Css
+overscrollBehaviorInline = key "overscroll-behavior-inline"
 
 -------------------------------------------------------------------------------