在本文中，我们将学习如何指定列间规则的宽度、样式和颜色。
方法： column-rule属性用于指定列之间规则的宽度、样式和颜色。它采用规则的宽度、规则的样式和规则的颜色三个值。
句法：
column-rule: width style color;示例 1：
HTML
GeeksforGeeks is my favorite site
where I can gain a lot of knowledge
and can also share my knowledge what
I have gained while learning. We can
add more paragraphs for content.
This is just an example to tell you
how to specify the optimal width for
the columns in CSS? The column width
is 160px in this example.
HTML
GeeksforGeeks is my favorite site where
I can gain a lot of knowledge and can
also share my knowledge what I have gained
while learning. We can add more
paragraphs for content. This is just an
example to tell you how to specify
the optimal width for the columns in CSS? The
column width is 160px in this example.
输出：
示例 2：
HTML
GeeksforGeeks is my favorite site where
I can gain a lot of knowledge and can
also share my knowledge what I have gained
while learning. We can add more
paragraphs for content. This is just an
example to tell you how to specify
the optimal width for the columns in CSS? The
column width is 160px in this example.
输出：
