The border-block-style CSS property defines the style of the logical block borders of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style and border-bottom-style, or border-left-style and border-right-style properties depending on the values defined for writing-mode, direction, and text-orientation.

/* <'border-style'> values */ border-block-style: dashed; border-block-style: dotted; border-block-style: groove;  /* Global values */ border-block-style: inherit; border-block-style: initial; border-block-style: revert; border-block-style: unset; 

border-block-style

The border-block-style CSS property defines the style of the logical block borders of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style and border-bottom-style, or border-left-style and border-right-style properties depending on the values defined for writing-mode, direction, and text-orientation.

The border style in the other dimension can be set with border-inline-style, which sets border-inline-start-style, and border-inline-end-style.

Syntax

/* <'border-style'> values */ border-block-style: dashed; border-block-style: dotted; border-block-style: groove;  /* Global values */ border-block-style: inherit; border-block-style: initial; border-block-style: revert; border-block-style: unset; 

Values

<'border-style'>

The line style of the border. See border-style.

Formal definition

Initial value	none
Applies to	all elements
Inherited	no
Computed value	as specified
Animation type	discrete

Formal syntax

<'border-top-style'>

Examples

Dashed border with vertical text

HTML

<div>   <p class="exampleText">Example text</p> </div> 

CSS

div {   background-color: yellow;   width: 120px;   height: 120px; }  .exampleText {   writing-mode: vertical-lr;   border: 5px solid blue;   border-block-style: dashed; } 

Results

Specifications

Specification
CSS Logical Properties and Values Level 1 # propdef-border-block-style

See also

This property maps to one of the physical border properties: border-top-style, border-right-style, border-bottom-style, or border-left-style. writing-mode, direction, text-orientation

Last modified: Aug 12, 2021, by MDN contributors

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