border-inline-start-width
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
The border-inline-start-width CSS property defines the width of the logical inline-start border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
Try it
border-inline-start-width: thick; writing-mode: horizontal-tb; border-inline-start-width: thick; writing-mode: vertical-rl; border-inline-start-width: 4px; writing-mode: horizontal-tb; direction: rtl; <section class="default-example" id="default-example"> <div class="transition-all" id="example-element"> This is a box with a border around it. </div> </section> #example-element { background-color: palegreen; color: black; border: 0 solid crimson; padding: 0.75em; width: 80%; height: 100px; unicode-bidi: bidi-override; } Syntax
/* <'border-width'> values */ border-inline-start-width: 5px; border-inline-start-width: thick; /* Global values */ border-inline-start-width: inherit; border-inline-start-width: initial; border-inline-start-width: revert; border-inline-start-width: revert-layer; border-inline-start-width: unset; Related properties are border-block-start-width, border-block-end-width, and border-inline-end-width, which define the other border widths of the element.
Values
<'border-width'>-
The width of the border. See
border-width.
Formal definition
| Initial value | medium |
|---|---|
| Applies to | all elements |
| Inherited | no |
| Percentages | logical-width of containing block |
| Computed value | absolute length; 0 if the border style is none or hidden |
| Animation type | by computed value type |
Formal syntax
border-inline-start-width =
<line-width>
<line-width> =
<length [0,∞]> |
thin |
medium |
thick
Examples
HTML
<div> <p class="exampleText">Example text</p> </div> CSS
div { background-color: yellow; width: 120px; height: 120px; } .exampleText { writing-mode: vertical-lr; border: 1px solid blue; border-inline-start-width: 5px; } Specifications
| Specification |
|---|
| CSS Logical Properties and Values Level 1 # border-width |
Browser compatibility
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See also
- CSS Logical Properties and Values
- This property maps to one of the physical border properties:
border-top-width,border-right-width,border-bottom-width, andborder-left-width writing-mode,direction,text-orientation