width property is used to specify the width of an element.
More specifically, the
width property sets the width of the content area or border area (depending on the value of the
box-sizing property) of certain boxes.
- Specifies a length value for the width (for example
300px). Negative values are illegal.
- Specifies a percentage value for the width (for example
80%). This is calculated as a width of the generated box's containing block. Negative values are illegal.
- Equal to the containing block width minus the current element's margin, border, and padding.
- The max-content width.
- The min-content width.
- Equal to
max(min-content, min(max-content, available)).
- If specified for the inline axis, uses
min(max-content size, max(min-content size, length-percentage)); otherwise computes to
- The width depends on the values of other properties. The browser will calculate the width accordingly.
stretch-fit inline sizeor
stretch-fit block size, as appropriate to the writing mode.
In addition, all CSS properties also accept the following CSS-wide keyword values as the sole component of their property value:
- Represents the value specified as the property's initial value.
- Represents the computed value of the property on the element's parent.
- This value acts as either
initial, 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.
- Initial Value
- Applies To
- All except for table rows, row groups, and non-replaced inline elements.
- Yes (see example)
Here are some examples of valid widths: