`border-style` CSS property

The border-style shorthand CSS property sets the line style for all four sides of an element's border.

Try it

border-style: none;

border-style: dotted;

border-style: inset;

border-style: dashed solid;

border-style: dashed double none;

border-style: dashed groove none dotted;

<section id="default-example">
  <div class="transition-all" id="example-element">
    This is a box with a border around it.
  </div>
</section>

#example-element {
  background-color: #eeeeee;
  color: black;
  border: 0.75em solid;
  padding: 0.75em;
  width: 80%;
  height: 100px;
}

body {
  background-color: white;
}

Constituent properties

This property is a shorthand for the following CSS properties:

Syntax

css

/* Keyword values */
border-style: none;
border-style: hidden;
border-style: dotted;
border-style: dashed;
border-style: solid;
border-style: double;
border-style: groove;
border-style: ridge;
border-style: inset;
border-style: outset;

/* top and bottom | left and right */
border-style: dotted solid;

/* top | left and right | bottom */
border-style: hidden double dashed;

/* top | right | bottom | left */
border-style: none solid dotted dashed;

/* Global values */
border-style: inherit;
border-style: initial;
border-style: revert;
border-style: revert-layer;
border-style: unset;

The border-style property may be specified using one, two, three, or four values.

When one value is specified, it applies the same style to all four sides.
When two values are specified, the first style applies to the top and bottom, the second to the left and right.
When three values are specified, the first style applies to the top, the second to the left and right, the third to the bottom.
When four values are specified, the styles apply to the top, right, bottom, and left in that order (clockwise).

Each value is a keyword chosen from the list below.

Values

<line-style>

Describes the style of the border. It can have the following values:

none: Like the hidden keyword, displays no border. Unless a background-image is set, the used value of the same side's border-width will be 0, even if the specified value is something else. In the case of table cell and border collapsing, the none value has the lowest priority: if any other conflicting border is set, it will be displayed.
hidden: Like the none keyword, displays no border. Unless a background-image is set, the used value of the same side's border-width will be 0, even if the specified value is something else. In the case of table cell and border collapsing, the hidden value has the highest priority: if any other conflicting border is set, it won't be displayed.
dotted: Displays a series of rounded dots. The spacing of the dots is not defined by the specification and is implementation-specific. The radius of the dots is half the computed value of the same side's border-width.
dashed: Displays a series of short square-ended dashes or line segments. The exact size and length of the segments are not defined by the specification and are implementation-specific.
solid: Displays a single, straight, solid line.
double: Displays two straight lines that add up to the pixel size defined by border-width.
groove: Displays a border with a carved appearance. It is the opposite of ridge.
ridge: Displays a border with an extruded appearance. It is the opposite of groove.
inset: Displays a border that makes the element appear embedded. It is the opposite of outset. When applied to a table cell with border-collapse set to collapsed, this value behaves like ridge.
outset: Displays a border that makes the element appear embossed. It is the opposite of inset. When applied to a table cell with border-collapse set to collapsed, this value behaves like groove.

Formal definition

Initial value	as each of the properties of the shorthand: `border-top-style`: `none` `border-right-style`: `none` `border-bottom-style`: `none` `border-left-style`: `none`
Applies to	all elements. It also applies to `::first-letter`.
Inherited	no
Computed value	as each of the properties of the shorthand: `border-top-style`: as specified `border-right-style`: as specified `border-bottom-style`: as specified `border-left-style`: as specified
Animation type	discrete

Formal syntax

border-style = 
  <'border-top-style'>{1,4}  

<border-top-style> = 
  <line-style>  

<line-style> = 
  none    |
  hidden  |
  dotted  |
  dashed  |
  solid   |
  double  |
  groove  |
  ridge   |
  inset   |
  outset

Examples

undefined

All property values

Here is an example of all the property values.

HTML

html

<pre class="b1">none</pre>
<pre class="b2">hidden</pre>
<pre class="b3">dotted</pre>
<pre class="b4">dashed</pre>
<pre class="b5">solid</pre>
<pre class="b6">double</pre>
<pre class="b7">groove</pre>
<pre class="b8">ridge</pre>
<pre class="b9">inset</pre>
<pre class="b10">outset</pre>

CSS

css

pre {
  height: 80px;
  width: 120px;
  margin: 20px;
  padding: 20px;
  display: inline-block;
  background-color: palegreen;
  border-width: 5px;
  box-sizing: border-box;
}

/* border-style example classes */
.b1 {
  border-style: none;
}

.b2 {
  border-style: hidden;
}

.b3 {
  border-style: dotted;
}

.b4 {
  border-style: dashed;
}

.b5 {
  border-style: solid;
}

.b6 {
  border-style: double;
}

.b7 {
  border-style: groove;
}

.b8 {
  border-style: ridge;
}

.b9 {
  border-style: inset;
}

.b10 {
  border-style: outset;
}

Result

Specifications

CSS Backgrounds and Borders Module Level 3

border-style CSS property