More “Try it Yourself” examples below.
Definition and Usage
The border-top-width property sets the width of an element’s top border.
Note: Always declare the border-style or the border-top-style property before the border-top-width property. An element must have borders before you can change the width.
| Default value: | medium |
|---|---|
| Inherited: | no |
| Animatable: | yes. Read about animatable – Try it |
| Version: | CSS1 |
| JavaScript syntax: | object.style.borderTopWidth=”5px” Try it |
CSS Syntax
border-top-width: medium|thin|thick|length|initial|inherit;
Property Values
| Value | Description |
|---|---|
| medium | Specifies a medium top border. This is default |
| thin | Specifies a thin top border |
| thick | Specifies a thick top border |
| length | Allows you to define the thickness of the top border |
| initial | Sets this property to its default value. Read about initial |
| inherit | Inherits this property from its parent element. Read about inherit |
Example
