diff --git a/css-transforms-2/Overview.bs b/css-transforms-2/Overview.bs index eeb2eb640111..b480a616d686 100644 --- a/css-transforms-2/Overview.bs +++ b/css-transforms-2/Overview.bs @@ -645,7 +645,7 @@ which can have additional side-effects in UAs. 
 Name: scale
-Value: none | <>{1,3}
+Value: none | [ <> | <> ]{1,3}
 Initial: none
 Applies to: transformable elements
 Inherited: no
@@ -667,6 +667,10 @@ If three values are given,
 this specifies a 3d scaling,
 equivalent to the ''scale3d()'' function.
 
+A <> is equivalent to a <>,
+for example ''scale: 100%;'' is equivalent to ''scale: 1;''.
+Numbers are used during serialization of specified and computed values.
+
 ----
 
 All three properties accept
@@ -910,6 +914,19 @@ The Transform Functions {#transform-functions}
 =======================
 
 The value of the 'transform' property is a list of <transform-function>. The set of allowed transform functions is given below. Wherever <> is used in this specification, a <> that is equal to zero is also allowed, which is treated the same as an angle of zero degrees. A percentage for horizontal translations is relative to the width of the reference box. A percentage for vertical translations is relative to the height of the reference box.
+A percentage in a scale function is equivalent to a number, and serializes as a number in specified values.
+For example, ''scale3d(50%, 100%, 150%)'' serializes as ''scale3d(0.5, 1, 1.5)''.
+
+2D Transform Functions {#two-d-transform-functions}
+----------------------
+
+The scale functions defined in [[!css-transforms-1]] now support percentages.
+
+: scale() = scale( [ <> | <> ]#{1,2} )
+
+: scaleX() = scaleX( [ <> | <> ] )
+
+: scaleY() = scaleY( [ <> | <> ] )
 
 3D Transform Functions {#three-d-transform-functions}
 ----------------------
@@ -924,9 +941,9 @@ In the following 3d transform functions, a <> behaves th
 :: specifies a 3D translation by the vector [tx,ty,tz], with tx, ty and tz being the first, second and third translation-value parameters respectively.
 : translateZ() = translateZ( <> )
 :: specifies a 3D translation by the vector [0,0,tz] with the given amount in the Z direction.
-: scale3d() = scale3d( <> , <>, <> )
+: scale3d() = scale3d( [ <> | <> ]#{3} )
 :: specifies a 3D scale operation by the [sx,sy,sz] scaling vector described by the 3 parameters.
-: scaleZ() = scaleZ( <> )
+: scaleZ() = scaleZ( [ <> | <> ] )
 :: specifies a 3D scale operation using the [1,1,sz] scaling vector, where sz is given as the parameter.
 : rotate3d() = rotate3d( <> , <> , <> , [ <> | <> ] )
 :: specifies a 3D rotation by the angle specified in last parameter about the [x,y,z] direction vector described by the first three parameters. A direction vector that cannot be normalized, such as [0,0,0], will cause the rotation to not be applied.