column-rule

In multi-column layouts, the column-rule CSS property specifies a straight line, or “rule”, to be drawn between each column. It is a convenient shorthand to avoid setting each of the individual column-rule-* properties separately : column-rule-width, column-rule-style and column-rule-color.

Values

Accepts one, two or three values in any order:

<‘column-rule-width’>
Is a <length> or one of the three keywords, thin, medium or thick. See border-width for details.
<‘column-rule-style’>
See border-style for possible values and details.
<‘column-rule-color’>
Is a <color> value.

<!DOCTYPE html>
<html>
    <head>
        <style>
            .myCSSStyle {
                -moz-column-count: 3; /* Firefox */
                -webkit-column-count: 3; /* Safari and Chrome */
                column-count: 3;
                -moz-column-gap: 40px; /* Firefox */
                -webkit-column-gap: 40px; /* Safari and Chrome */
                column-gap: 40px;
                -moz-column-rule: 4px outset #096; /* Firefox */
                -webkit-column-rule: 4px outset #096; /* Safari and Chrome */
                column-rule: 4px outset #096;
            }
        </style>
    </head>
    <body>
        <p>
            <b>Note:</b>
            Internet Explorer and Firefox do not support the columns
            property.
        </p>
        <div class="myCSSStyle">
            On the Insert tab, the galleries include items that are designed 
            to coordinate with the overall look of your document. You can use  
            these galleries to insert tables, headers, footers, lists, cover 
            pages, and other document building blocks.
            When you create pictures, charts, or diagrams, they also coordinate
            with your current document look.You can easily change the formatting 
            of selected text in the document text by choosing a look for the 
            selected text from the Quick Styles gallery on the Home tab. You can  
            also format text directly by using the other controls on the Home 
            tab. Most controls offer a choice of using the look from the current 
            theme or using a format that you specify directly.
            To change the overall look of your document, choose new Theme 
            elements on the Page Layout tab. To change the looks available 
            in the Quick Style gallery, use the Change Current Quick Style 
            Set command. Both the Themes gallery and the Quick Styles 
            gallery provide reset commands so that you can always restore 
            the look of your document to the original contained in your 
            current template. 
        </div>
    </body>
</html>