border-top-style - CSS: Cascading Style Sheets 编辑

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

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

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

Syntax

/* 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: unset;

The border-top-style property is specified as a single keyword chosen from those available for the border-style property.

Formal definition

Formal syntax

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

Examples

Setting border-top-style

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

/* 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

Browser compatibility

BCD tables only load in the browser

See also

• The other style-related border properties: border-left-style, border-right-style, border-bottom-style, and border-style.
• The other top-border-related properties: border-top, border-top-color, and border-top-width.