CSS BORDER-TOP-WIDTH

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This property controls the thickness (width) of the top border of an element’s rendering box. Negative values are not allowed.

 

Example

strong { border-top-width: thin }

<strong style=”border-top-width: thin”>this is a test</strong>

 

Possible Values

Value Description
inherit Explicitly sets the value of this property to that of the parent.
thin | medium | thick Renders a “thin”, “medium” or “thick” border on the top side of the element’s rendering box. The actual thickness of these border values is not specified, but “thin” should have a smaller thickness than “medium”, which should have a smaller thickness than “thick”.
[length] Sets the width of the border on the top side of the element’s rendering box to an explicit measurement.