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CSS Borders

CSSCSS Border Properties

The CSS border properties allow you to specify the style, width, and color of an element's border.
I have borders on all sides.

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

<!DOCTYPE html>
<html>
<head>
<style>
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;}
</style>
</head>
<body>

<h2>The border-style Property</h2>
<p>This property specifies what kind of border to display:</p>

<p class="dotted">A dotted border.</p>
<p class="dashed">A dashed border.</p>
<p class="solid">A solid border.</p>
<p class="double">A double border.</p>
<p class="groove">A groove border.</p>
<p class="ridge">A ridge border.</p>
<p class="inset">An inset border.</p>
<p class="outset">An outset border.</p>
<p class="none">No border.</p>
<p class="hidden">A hidden border.</p>
<p class="mix">A mixed border.</p>

</body>
</html>
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.
Note: None of the OTHER CSS border properties described below will have ANY effect unless the border-style property is set!

Border Width

The border-width property specifies the width of the four borders.
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).
5px border-width

Example

<!DOCTYPE html>
<html>
<head>
<style>
p.one {
    border-style: solid;
    border-width: 5px;
}

p.two {
    border-style: solid;
    border-width: medium;
}

p.three {
    border-style: dotted;
    border-width: 2px;
}

p.four {
    border-style: dotted;
    border-width: thick;
}

p.five {
    border-style: double;
    border-width: 15px;
}

p.six {
    border-style: double;
    border-width: thick;
}

p.seven {
    border-style: solid;
    border-width: 2px 10px 4px 20px;
}
</style>
</head>
<body>

<h2>The border-width Property</h2>
<p>This property specifies the width of the four borders:</p>

<p class="one">Some text.</p>
<p class="two">Some text.</p>
<p class="three">Some text.</p>
<p class="four">Some text.</p>
<p class="five">Some text.</p>
<p class="six">Some text.</p>
<p class="seven">Some text.</p>

<p><b>Note:</b> The "border-width" property does not work if it is used alone.
Always specify the "border-style" property to set the borders first.</p>

</body>
</html>

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.
Red border

Example

<!DOCTYPE html>
<html>
<head>
<style>
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;
}
</style>
</head>
<body>

<h2>The border-color Property</h2>
<p>This property specifies the color of the four borders:</p>

<p class="one">A solid red border</p>
<p class="two">A solid green border</p>
<p class="three">A solid multicolor border</p>
<p><b>Note:</b> The "border-color" property does not work if it is used alone. Use the "border-style" property to set the borders first.</p>

</body>
</html>

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):
Different Border Styles

Example

<!DOCTYPE html>
<html>
<head>
<style>
p {
    border-top-style: dotted;
    border-right-style: solid;
    border-bottom-style: dotted;
    border-left-style: solid;
}
</style>
</head>
<body>

<p>2 different border styles.</p>

</body>
</html>

Example

<!DOCTYPE html>
<html>
<head>
<style>
p {
    border-style: dotted solid;
}
</style>
</head>
<body>

<p>2 different border styles.</p>

</body>
</html>
So, here is how it works:
If the border-style property has four values:
  • border-style: dotted solid double dashed;
    • top border is dotted
    • right border is solid
    • bottom border is double
    • left border is dashed
If the border-style property has three values:
  • border-style: dotted solid double;
    • top border is dotted
    • right and left borders are solid
    • bottom border is double
If the border-style property has two values:
  • border-style: dotted solid;
    • top and bottom borders are dotted
    • right and left borders are solid
If the border-style property has one value:
  • border-style: dotted;
    • all four borders are dotted
The border-style property is used in the example above. However, it also works with border-width and border-color.

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

Example

<!DOCTYPE html>
<html>
<head>
<style>
p {
    border: 5px solid red;
}
</style>
</head>
<body>

<h2>The border Property</h2>

<p>This property is a shorthand property for border-width, border-style, and border-color.</p>

</body>
</html>
Result:
Some text
You can also specify all the individual border properties for just one side:

Left Border

<!DOCTYPE html>
<html>
<head>
<style>
p {
    border-left: 6px solid red;
    background-color: lightgrey;
}
</style>
</head>
<body>

<h2>The border-left Property</h2>
<p>This property is a shorthand property for border-left-width, border-left-style, and border-left-color.</p>

</body>
</html>
Result:
Some text

Bottom Border

<!DOCTYPE html>
<html>
<head>
<style>
p {
    border-bottom: 6px solid red;
    background-color: lightgrey;
}
</style>
</head>
<body>

<h2>The border-bottom Property</h2>
<p>This property is a shorthand property for border-bottom-width, border-bottom-style, and border-bottom-color.</p>

</body>
</html>
Result:
Some text

Rounded Borders

The border-radius property is used to add rounded borders to an element:
Normal border
Round border
Rounder border
Roundest border

Example

<!DOCTYPE html>
<html>
<head>
<style>
p.normal {
    border: 2px solid red;
}

p.round1 {
    border: 2px solid red;
    border-radius: 5px;
}

p.round2 {
    border: 2px solid red;
    border-radius: 8px;
}

p.round3 {
    border: 2px solid red;
    border-radius: 12px;
}
</style>
</head>
<body>

<h2>The border-radius Property</h2>
<p>This property is used to add rounded borders to an element:</p>

<p class="normal">Normal border</p>
<p class="round1">Round border</p>
<p class="round2">Rounder border</p>
<p class="round3">Roundest border</p>

<p><b>Note:</b> The "border-radius" property is not supported in IE8 and earlier versions.</p>

</body>
</html>

.

All CSS Border Properties

Property Description
border Sets all the border properties in one declaration
border-bottom Sets all the bottom border properties in one declaration
border-bottom-color Sets the color of the bottom border
border-bottom-style Sets the style of the bottom border
border-bottom-width Sets the width of the bottom border
border-color Sets the color of the four borders
border-left Sets all the left border properties in one declaration
border-left-color Sets the color of the left border
border-left-style Sets the style of the left border
border-left-width Sets the width of the left border
border-radius Sets all the four border-*-radius properties for rounded corners
border-right Sets all the right border properties in one declaration
border-right-color Sets the color of the right border
border-right-style Sets the style of the right border
border-right-width Sets the width of the right border
border-style Sets the style of the four borders
border-top Sets all the top border properties in one declaration
border-top-color Sets the color of the top border
border-top-style Sets the style of the top border
border-top-width Sets the width of the top border
border-width Sets the width of the four borders
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