AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.5.0" />

 OutlineStyle

public enum OutlineStyle
An enumeration with all possible outlien styles.
Dashed = 2

The outline is a series of short line segments.

Dotted = 1

The outline is a series of dots.

Double = 4

The outline is two single lines. The outline-width is the sum of the two lines and the space between them.

Groove = 5

The outline looks as though it were carved into the canvas.

Inset = 7

The outline makes the box look as though it were embeded in the canvas.

None = 0

No outline (outline-width is 0).

Outset = 8

The opposite of inset: the outline makes the box look as though it were coming out of the canvas.

Ridge = 6

The opposite of groove: the outline looks as though it were coming out of the canvas.

Solid = 3

The outline is a single line.