This deprecated property is not recommended. Authors should generally find an alternative way to accomplish the same task while adhering to all best practices, or simply do without it if it is unimportant.
The layout-flow property is used in CSS and certain HTML elements. This property controls the direction and flow of the content in an element. It has been deprecated in favor of the CSS writing-mode property which accomplishes the same task.
Values
horizontal- Character glyphs flow one after another from the source content from left to right, starting from the top of the element's rendering box. When a new line is started, it starts below the previous line at the left-hand side of the element's rendering box. This is the layout mode used in most Roman-based documents.vertical-ideographic- Character glyphs flow one after another from the source content from top to bottom, starting from the right side of the element's rendering box. When a new line is started, it starts to the left of the previous line at the top side of the element's rendering box. Full-width characters are rendered with their top on the same side as the top of the rendering box, and half-width characters (select kana glyphs and western characters) are rendered rotated 90 degrees clockwise to the original rendering box's orientation. This layout mode is used in East Asian typography.
HTML example:
<p style="layout-flow:horizontal;"> Paragraph content. </p>
CSS example:
p {
layout-flow:horizontal;
}