column-rule-width

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2017.

column-rule-width は CSS のプロパティで、段組みレイアウトで段間に引かれる線（段間罫）の太さを設定します。

試してみましょう

構文

css
/* キーワード値 */
column-rule-width: thin;
column-rule-width: medium;
column-rule-width: thick;

/* <length> 値 */
column-rule-width: 1px;
column-rule-width: 2.5em;

/* グローバル値 */
column-rule-width: inherit;
column-rule-width: initial;
column-rule-width: revert;
column-rule-width: unset;

column-rule-width プロパティは単一の <'border-width'> の値で指定します。

値

<'border-width'>

border-width で定められたキーワードで段間罫の太さを指定します。 <length> または thin、 medium、 thick のキーワードのいずれかです。

公式定義

初期値medium
適用対象段組み要素
継承なし
計算値絶対的な長さ、列の罫線のスタイルが none か hidden なら 0
アニメーションの種類length

形式文法

column-rule-width = 
  <line-width-list>       |
  <auto-line-width-list>  

<line-width-list> = 
  [ <line-width-or-repeat> ]+  

<auto-line-width-list> = 
  [ <line-width-or-repeat> ]* <auto-repeat-line-width> [ <line-width-or-repeat> ]*  

<line-width-or-repeat> = 
  <line-width>         |
  <repeat-line-width>  

<auto-repeat-line-width> = 
  repeat( auto , [ <line-width> ]+ )  

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

<repeat-line-width> = 
  repeat( [ <integer [1,∞]> ] , [ <line-width> ]+ )

例

太い段間罫を設定

HTML

html
<p>
  This is a bunch of text split into three columns. The `column-rule-width`
  property is used to change the width of the line that is drawn between
  columns. Don't you think that's wonderful?
</p>

CSS

css
p {
  column-count: 3;
  column-rule-style: solid;
  column-rule-width: thick;
}

結果

仕様書

Specification
CSS Multi-column Layout Module Level 1
# crw

ブラウザーの互換性

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関連情報