CSS Borders
The CSS border properties allow you to specify the style,
width, and color of an element's border.
I have borders on all sides.
I have a red bottom border.
I have rounded borders.
I have a blue left border.
CSS Border Style
The border-style property specifies what kind of border to display.
The following values are allowed:
dotted - Defines a dotted border
dashed - Defines a dashed border
solid - Defines a solid border
double - Defines a double border
groove - Defines a 3D grooved border. The effect depends on the border-color value
ridge - Defines a 3D ridged border. The effect depends on the border-color value
inset - Defines a 3D inset border. The effect depends on the border-color value
outset - Defines a 3D outset border. The effect depends on the border-color value
none - Defines no border
hidden - Defines a hidden border
The border-style property can have from one to four values (for
the top border, right border, bottom border, and the left border).
Example
Demonstration of the different border styles:
p.dotted {border-style: dotted;}p.dashed
{border-style: dashed;}p.solid {border-style: solid;}p.double
{border-style: double;}p.groove {border-style: groove;}p.ridge
{border-style: ridge;}p.inset {border-style: inset;}p.outset
{border-style: outset;}p.none {border-style: none;}p.hidden {border-style: hidden;}
p.mix {border-style: dotted dashed solid double;}
Result:
A dotted border.
A dashed border.
A solid border.
A double border.
A groove border. The effect depends on the border-color value.
A ridge border. The effect depends on the border-color value.
An inset border. The effect depends on the border-color value.
An outset border. The effect depends on the border-color value.
No border.
A hidden border.
A mixed border.
Try it Yourself »
Note: None of the OTHER CSS border properties (which you will learn more about in the next chapters) will have ANY effect unless the
border-style property is set!
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Reference: https://www.w3schools.com/css/css_border.asp