CSS 中的 column-rule-style 属性用于设置多列布局上各列之间的列规则样式。
句法：
column-rule-style: none|double|groove|ridge|inset|hidden|dotted|
dashed|solid|outset|initial|inherit属性值： column-rule-style 属性包含以下列出的许多值：
- none：这是默认值，用于指定列之间没有规则。
- hidden：定义列之间的隐藏规则。
- dotted：定义列之间的虚线规则。
- dashed：定义列之间的虚线规则。
- 实体：它定义了列之间的实体规则。
- double：它定义了列之间的双重规则。
- 凹槽：它定义了 3D 凹槽规则。效果取决于宽度和颜色值。
- 脊：它定义了一个 3D 脊规则。效果取决于宽度和颜色值。
- inset：它定义了一个 3D 插入规则。效果取决于宽度和颜色值。
- 起始：它定义了一个 3D 起始规则。效果取决于宽度和颜色值。
- 初始：将值设置为其默认值。
- 继承：从其父元素继承的属性。
示例 1：
CSS | column-rule-style Property
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输出： 
示例 2：
CSS | column-rule-style Property
GeeksforGeeks
Prepare for the Recruitment drive of product
based companies like Microsoft, Amazon, Adobe
etc with a free online placement preparation
course. The course focuses on various MCQ's
& Coding question likely to be asked in the
interviews & make your upcoming placement
season efficient and successful.
输出： 
示例 3：
CSS | column-rule-style Property
GeeksforGeeks
Prepare for the Recruitment drive of product
based companies like Microsoft, Amazon, Adobe
etc with a free online placement preparation
course. The course focuses on various MCQ's
& Coding question likely to be asked in the
interviews & make your upcoming placement
season efficient and successful.
输出： 
支持的浏览器： column-rule-style 属性支持的浏览器如下：
- 谷歌浏览器 50.0, 4.0 -webkit-
- 浏览器 10.0
- 火狐 52.0, 2.0 -moz-
- Safari 9.0, 31.0 -webkit-
- 歌剧 37.0, 15.0 -webkit-, 11.1