border-top-style property
Specifies the style of the top border of the object.
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Syntax
border-top-style: none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset | window-inset
Property values
none-
Initial value. Border is not drawn, regardless of any border-width.
hidden-
Internet Explorer 8 and later. Same as none, except in terms of conflict resolution of collapsed borders. Any element with a hidden border suppresses all shared borders at that location. Borders with a style of none have the lowest priority.
dotted-
Border is a dotted line.
dashed-
Border is a dashed line.
solid-
Border is a solid line.
double-
Border is a double line drawn on top of the background of the object. The sum of the two single lines and the space between equals the border-width value. The border width must be at least 3 pixels wide to draw a double border.
groove-
3-D groove is drawn in colors based on the value.
ridge-
3-D ridge is drawn in colors based on the value.
inset-
3-D inset is drawn in colors based on the value.
outset-
3-D outset is drawn in colors based on the value.
window-inset-
Same as inset with a thin outside border.
CSS information
| Applies To | All elements |
|---|---|
| Media | visual |
| Inherited | no |
| Initial Value | none |
Standards information
- CSS Backgrounds and Borders Module Level 3, Section 4.2
Remarks
An border-width greater than zero must be set for the border-top-style attribute to render.
Examples
This example uses border-top-style to specify the top border style for a div element.
<body> <div id="right"></div> </body>
The CSS below specifies double as the default border style for div elements, then sets border-top-style to solid for the div element above. The following image shows the result, a solid top border.

div {
width: 50px;
height: 50px;
border-width: 5px;
border-style: double;
border-color: #4169E1;
}
#top {
border-top-style: solid;
}
See also
- CSSStyleDeclaration
- currentStyle
- defaults
- runtimeStyle
- style
- border
- border-right-style
- border-bottom-style
- border-left-style
