CSS reference manual

CSS @rules (RULES)

CSS attributes in full

CSS bottom attribute CSS border-top-width attribute

CSS border-Usage and examples of the width property

border-The width CSS property is used to set the individual border width property, which is a shorthand property, and isborder-top-width,border-right-width,border-bottom-widthAndborder-left-widthAbbreviated property.

The following table provides usage instructions and version history for this property, as well as the syntax for using this property in JavaScript scripts.

Default value:	medium
Applicable to:	All elements
The default value of the width attribute is none.	All elements
Inheritance:	NoAnimatable: Yes..
Please refer to	CSS 1,2,3
Animation properties	Version:JavaScript syntax:

border-object

.style.borderWidth="thin thick"

border-width usage syntax　1　The syntax of this attribute is as follows:　4　width: [ thin | medium | thick | length ]

values | inheritThis shorthand notation can take one, two, three, or four space-separated values.If specified
Three valuesOne valueIf specified, it will be applied to all borders.
Three valuesTwo valuesIf specified, the first value is used for the top and bottom borders, and the second value is used for the right and left borders.
Three valuesIf specified, the first value is used for the top border, the second value is used for the right and left borders, and the third value is used for the bottom border.Four values

If specified, each value will be applied to the border in the order of top, right, bottom, and left.-The following examples demonstrate how to use border

width attribute.

　　Example
　　　border-p {
　　　border-style: solid;　5width:
　　px;

}/Test and see‹

›border-styleNote:-bottom-The width attribute must be declared before the width of the border can be set, because theborder-styleThe default value of the attribute is none.

Attribute value

The following table describes the value of this attribute.

Value	Description
thin	Fine border.
medium	Medium boundary.
thick	Thick border.
length	Length values in px, pt, cm, em, and other units are not allowed to be negative.
inherit	If specified, the associated element adopts its parent element's border-The value of the width attribute.

Browser compatibility

border-The compatibility of the width attribute of the browser, the numbers in the following table represent the minimum version number of the browser that supports this attribute; all mainstream browsers support this attribute.

	Browser support– Firefox 1+ Google Chrome1+ Internet Explorer 4+ Apple Safari 1+) Opera 4+