border-block-width

The border-block-width CSS property is shorthand for border-block-start-width and border-block-end-width.

Syntax

CSS

border-block-width: value;

JS

object.style.borderBlockWidth = "value";

Values

<'border-block-width'> = <'border-top-width'>{1,2}

<'border-top-width'> = <line-width>

<line-width> = <length [0,∞]> | thin | medium | thick

<length>

Specifies the length using a number followed by a unit of measurement.

thin

A thin line.

medium

A medium line.

thick

A thick line.

Initial

medium

<!doctype html>
<html>
<head>
    <style>
        p {
            border-block-style: solid;
            margin: 0;
        }
        p:nth-of-type(2) {
            writing-mode: vertical-lr;
        }
    </style>
    <script>
        function mouseover(value) {
            var elements = document.getElementsByTagName("p");
            for (var i = 0; elements.length; ++i) {
                elements[i].style.borderBlockWidth = value;
            }
        }
    </script>
</head>
<body>
    <button onmouseover="mouseover(value)" value="1px">length</button>
    <input onmouseover="mouseover(value)" type="button" value="medium">
    <input onmouseover="mouseover(value)" type="button" value="thick">
    <input onmouseover="mouseover(value)" type="button" value="thin"><br>
    <button onmouseover="mouseover(value)" value="1px">start-end</button>
    <button onmouseover="mouseover(value)" value="1px medium">start end</button>
    <p>border-block-width</p>
    <p>border-block-width</p>
</body>
</html>

border-block-width

Syntax

CSS

JS

Values

Initial

Examples

length

medium

thick

thin

JS

Links

Internal

External