border-top-style

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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The border-top-style CSS property sets the line style of an element's top border.

Try it

border-top-style: none;

border-top-style: dotted;

border-top-style: dashed;

border-top-style: solid;

border-top-style: groove;

border-top-style: inset;

<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: #eee;
  color: #000;
  border: 0.75em solid;
  padding: 0.75em;
  width: 80%;
  height: 100px;
}

body {
  background-color: #fff;
}

Note: The specification doesn't define how borders of different styles connect in the corners.

Syntax

css

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

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

The border-top-style property is specified as a single <line-style> keyword value.

Formal definition

Initial value	`none`
Applies to	all elements. It also applies to `::first-letter`.
Inherited	no
Computed value	as specified
Animation type	discrete

Formal syntax

border-top-style = 
  <line-style>  

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

Examples

Setting border-top-style

HTML

html

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

CSS

css

/* Define look of the table */
table {
  border-width: 2px;
  background-color: #52e385;
}
tr,
td {
  padding: 3px;
}

/* border-top-style example classes */
.b1 {
  border-top-style: none;
}
.b2 {
  border-top-style: hidden;
}
.b3 {
  border-top-style: dotted;
}
.b4 {
  border-top-style: dashed;
}
.b5 {
  border-top-style: solid;
}
.b6 {
  border-top-style: double;
}
.b7 {
  border-top-style: groove;
}
.b8 {
  border-top-style: ridge;
}
.b9 {
  border-top-style: inset;
}
.b10 {
  border-top-style: outset;
}

Result

Specifications

Specification
CSS Backgrounds and Borders Module Level 3 # the-border-style