CSS: Border

BORDER:

The CSS border properties allow you to specify the style, width, and color of an element’s border.

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:

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;}

 

Border Width:

The width can be set as a specific size (in px, pt, cm, em, etc) or by using one of the three pre-defined values: thin, medium, or thick.

The border-width property can have from one to four values (for the top border, right border, bottom border, and the left border).

The border-width property specifies the width of the four borders.

Border Color:

The border-color property is used to set the color of the four borders.

The color can be set by:

  • name – specify a color name, like “red”
  • Hex – specify a hex value, like “#ff0000”
  • RGB – specify a RGB value, like “rgb(255,0,0)”
  • transparent

The border-color property can have from one to four values (for the top border, right border, bottom border, and the left border).

If border-color is not set, it inherits the color of the element.

Example:

p.one {
border-style: solid;
border-color: red;
}

p.two {
border-style: solid;
border-color: green;
}

p.three {
border-style: solid;
border-color: red green blue yellow;
}

Border – Individual Sides

From the examples above you have seen that it is possible to specify a different border for each side.

In CSS, there are also properties for specifying each of the borders (top, right, bottom, and left):

Example

p {
border-top-style: dotted;
border-right-style: solid;
border-bottom-style: dotted;
border-left-style: solid;
}

Border – Shorthand Property

As you can see from the examples above, there are many properties to consider when dealing with borders.

To shorten the code, it is also possible to specify all the individual border properties in one property.

The border property is a shorthand property for the following individual border properties:

  • border-width
  • border-style (required)
  • border-color

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