border-block-start
Quick Summary for border-block-start
The border-block-start CSS property is a shorthand property for setting the individual logical block-start border property values in a single place in the style sheet.
Code Usage for border-block-start
border-block-start: 1px; border-block-start: 2px dotted; border-block-start: medium dashed blue;  /* Global values */ border-block-start: inherit; border-block-start: initial; border-block-start: revert; border-block-start: unset; 
More Details for border-block-start

border-block-start

The border-block-start CSS property is a shorthand property for setting the individual logical block-start border property values in a single place in the style sheet.

Constituent properties

This property is a shorthand for the following CSS properties:

border-block-start-color border-block-start-style border-block-start-width

Syntax

border-block-start: 1px; border-block-start: 2px dotted; border-block-start: medium dashed blue;  /* Global values */ border-block-start: inherit; border-block-start: initial; border-block-start: revert; border-block-start: unset; 

border-block-start can be used to set the values for one or more of border-block-start-width, border-block-start-style, and border-block-start-color. The physical border to which it maps depends on the element's writing mode, directionality, and text orientation. It corresponds to the border-top, border-right, border-bottom, or border-left property depending on the values defined for writing-mode, direction, and text-orientation.

Related properties are border-block-end, border-inline-start, and border-inline-end, which define the other borders of the element.

Values

The border-block-start is specified with one or more of the following, in any order:

<'border-width'>

The width of the border. See border-width.

<'border-style'>

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

<'color'>

The color of the border. See color.

Formal definition

Initial valueas each of the properties of the shorthand:border-width: as each of the properties of the shorthand:border-top-width: mediumborder-right-width: mediumborder-bottom-width: mediumborder-left-width: mediumborder-style: as each of the properties of the shorthand:border-top-style: noneborder-right-style: noneborder-bottom-style: noneborder-left-style: nonecolor: canvastext
Applies toall elements
Inheritedno
Computed valueas each of the properties of the shorthand:border-width: as each of the properties of the shorthand:border-bottom-width: the absolute length or 0 if border-bottom-style is none or hiddenborder-left-width: the absolute length or 0 if border-left-style is none or hiddenborder-right-width: the absolute length or 0 if border-right-style is none or hiddenborder-top-width: the absolute length or 0 if border-top-style is none or hiddenborder-style: as each of the properties of the shorthand:border-bottom-style: as specifiedborder-left-style: as specifiedborder-right-style: as specifiedborder-top-style: as specifiedborder-block-start-color: computed color
Animation typeas each of the properties of the shorthand:border-block-start-color: a colorborder-block-start-style: discreteborder-block-start-width: a length

Formal syntax

<'border-top-width'> || <'border-top-style'> || <color>

where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hwb()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>

where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]? ) | rgb( <number>{3} [ / <alpha-value> ]? ) | rgb( <percentage>#{3} , <alpha-value>? ) | rgb( <number>#{3} , <alpha-value>? )<rgba()> = rgba( <percentage>{3} [ / <alpha-value> ]? ) | rgba( <number>{3} [ / <alpha-value> ]? ) | rgba( <percentage>#{3} , <alpha-value>? ) | rgba( <number>#{3} , <alpha-value>? )<hsl()> = hsl( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsl( <hue>, <percentage>, <percentage>, <alpha-value>? )<hsla()> = hsla( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsla( <hue>, <percentage>, <percentage>, <alpha-value>? )<hwb()> = hwb( [<hue> | none] [<percentage> | none] [<percentage> | none] [ / [<alpha-value> | none] ]? )

where <alpha-value> = <number> | <percentage><hue> = <number> | <angle>

Examples

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-rl;   border-block-start: 5px dashed blue; } 

Specifications

Specification
CSS Logical Properties and Values Level 1 # border-shorthands

See also

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

Last modified: Aug 12, 2021, by MDN contributors

Select your preferred language English (US)EspañolFrançais日本語 Change language

No Items Found.

Add Comment
Type in a Nick Name here
 
Other Categories in CSS
css
Search CSS
Search CSS by entering your search text above.
Welcome

This is my test area for webdev. I keep a collection of code here, mostly for my reference. Also if i find a good link, i usually add it here and then forget about it. more...

You could also follow me on twitter. I have a couple of youtube channels if you want to see some video related content. RuneScape 3, Minecraft and also a coding channel here Web Dev.

If you found something useful or like my work, you can buy me a coffee here. Mmm Coffee. ☕

❤️👩‍💻🎮

🪦 2000 - 16 Oct 2022 - Boots
Random Quote

minecraft
Random CSS Property

<length>

The <length> CSS data type represents a distance value. Lengths can be used in numerous CSS properties, such as width, height, margin, padding, border-width, font-size, and text-shadow.
length#vmax css reference