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The CSS reference

"border-top" - css property (v. css 1)

This is a shorthand property for setting the width, style and color of an element's top border.
Initial value: Not defined for shorthand properties
The property is not inherited
HTML usage: all elements
Browsers that support the border-top - property :

Possible width values:

Values	Comments	CSS
thin, medium or thick	The width of the keyword values are UA dependent, but the following holds: 'thin' <= 'medium' <= 'thick'.	1
length	With this you specify a value with a unit identifier.	1
inherit	Will inherit the value from parent specification. This property value is new with CSS 2.	2

Possible unit identifier:

unit identifier	Comments	CSS
em	The relative unit 'em' is relative to the font size of the element itself.	1
ex	The relative unit 'ex' is relative to the font size of the element itself.	1
px	Pixels, relative to the viewing device	1
in	inches -> 1 inch is equal to 2.54 centimeters.	1
cm	centimeters.	1
mm	millimeters.	1
pt	points -> the points used by CSS2 are equal to 1/72th of an inch.	1
pc	picas -> 1 pica is equal to 12 points.	1

Possible color values:

values	Comments	CSS
Color name	HTML and CSS color specification defines 147 color names (17 standard colors plus 130 more). You find all the named color through the drop-down selection in the color picker below.	1
rgb(r,g,b)	Integer values representing a color in the form of Red Green and Blue components each with a value between 0 - 255. (rgb(255,0,0) gives a red color)	1
#value	A hexadecimal value representing a color in the form of Red Green and Blue components each with a value between 00 - FF.	1
inherit	Will inherit the value from parent specification. This property value is new with CSS 2.	2

Color picker:

Selected Color:

Hex:
Red:
Green:
Blue:
Hue:
Saturation:
Value:

Harmonious colors:

Possible border styles values:

border style	Comments	CSS
none	No border is drawn (regardless of the 'border-width' value).	1
dotted	The border is a dotted line drawn on top of the background of the element.	1
dashed	The border is a dashed line drawn on top of the background of the element.	1
solid	The border is a solid line.	1
double	The border is a double line drawn on top of the background of the element. The sum of the two single lines and the space between equals the 'border-width' value.	1
groove	A 3D groove is drawn in colors based on the <color> value.	1
ridge	A 3D ridge is drawn in colors based on the <color> value.	1
inset	A 3D inset is drawn in colors based on the <color> value.	1
outset	A 3D outset is drawn in colors based on the <color> value.	1
inherit	Will inherit the value from parent specification. This property value is new with CSS 2.	2

Property "border-top" example:

<!DOCTYPE HTML >
<html  >
  <head>
    <title>Test</title>
    <style type="text/css">
      .presentation {
        border-top: #4DFFFF solid 5px ;
        border-right: #4DFFA6 solid 22px ;
        border-bottom: #FF4D4D solid 5px ;
        border-left: #4DA6FF solid 22px ;
        width: 400px;
        }
     </style>
  </head>
  <body>
    <div class='presentation'  >The Inherit value is inherited from
          the parent specification. This property value is new
          with CSS 2.
    </div>
  </body>
</html>

Javascript access:

// To SET values ([o] is the target object)
[o].style.borderTop="border-top values"
// Browsers can not return any trustworthy value from this property.
// To GET values, look at the details for each edge of the border.

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