HTML doesn't offer as clean a solution for vertical lines as it does for horizontal lines -- a vertical equivalent to the Set your image up within your text and add a "style" attribute tag.

The colors of horizontal and vertical grid lines may be changed independently of one another. How to Draw a Grid in SketchUp. SketchUp is a 3D modeling application similar to Photoshop ...

Vertical lines have equations of the form \(x = k\). Horizontal lines have equations of the form \(y = c\). Draw the graph of \(x = 3\). Mark some points on a grid which have an \(x\)-coordinate ...