CSS transform-box
The CSS transform-box property defines the reference box to which the transform and transform-origin properties relate.
All transformations defined by the transform and transform-origin properties are relative to the position and dimensions of the reference box of the element.
Syntax
The syntax goes like this:
Which means that the reference box is specified by one of the following:
Explanation of the possible values:
content-box- Uses the content box as reference box. The reference box of a table is the border box of its table wrapper box, not its table box.
border-box- Uses the border box as reference box. The reference box of a table is the border box of its table wrapper box, not its table box.
fill-box- Uses the object bounding box as reference box. The object bounding box is the bounding box that contains only an element's geometric shape. For basic shapes, this is the area that is filled.
stroke-box- Uses the stroke bounding box as reference box. The stroke bounding box is the bounding box that contains an element's geometric shape and its stroke shape.
view-box- Uses the nearest SVG viewport as reference box.
In addition, all CSS properties also accept the following CSS-wide keyword values as the sole component of their property value:
initial- Represents the value specified as the property's initial value.
inherit- Represents the computed value of the property on the element's parent.
unset- This value acts as either
inheritorinitial, depending on whether the property is inherited or not. In other words, it sets all properties to their parent value if they are inheritable or to their initial value if not inheritable.
Basic Property Information
- Initial Value
view-box- Applies To
This property applies only to transformable elements.
In HTML, a transformable element is either:
- a block-level or atomic inline-level element
- or whose CSS
displayproperty computes totable-row,table-row-group,table-header-group,table-footer-group,table-cell, ortable-caption
In SVG, a transformable element is an element which has the attributes
transform,patternTransformorgradientTransform.- Inherited?
- No
- Computed Value
- Specified keyword.
- Animatable
- Discrete
CSS Specifications
- The
transform-boxproperty is defined in CSS Transforms Module Level 1.
Browser Support
Browser support for CSS properties can vary, particularly for newer or experimental features. Check current browser compatibility before using a property in production, especially when supporting older browsers.
The following table provided by Caniuse.com shows the level of browser support for this feature.
Initial Value
CSS properties have an initial value that applies when the property has not been explicitly set. The initial value is different from the value inherited from a parent element and may vary between properties.
Inheritance
Some CSS properties inherit their computed value from their parent element by default, while others do not. The inherit, initial, unset, and revert keywords can also be used to control how a property gets its value.
Vendor Prefixes
Most modern CSS properties use the standard, unprefixed syntax. Vendor-prefixed properties such as -webkit- are mainly relevant to older browser versions or specific features and should only be used when required by your browser support targets.