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    border-top-width

    Summary

    The border-top-width CSS property sets the width of the top border of a box.

    Syntax

    Formal syntax: <br-width>
    
    border-top-width: 10em    /* Any <length> value */
    border-top-width: 3vmax
    border-top-width: 6px
    
    border-top-width: thin    /* A keyword */
    border-top-width: medium
    border-top-width: thick
    
    border-top-width: inherit
    

    Values

    <br-width>
    Is either a non-negative explicit <length> value or a keyword denoting the thickness of the bottom border. The keyword must be one of the following values:
    thin
     
    A thin border
    medium
     
    A medium border
    thick
     
    A thick border
    The specification doesn't precisely define the thickness of each of the keywords, which is therefore implementation specific. Nevertheless, it requests that the thickness does follow the thin ≤ medium ≤ thick inequality and that the values are constant on a single document.
    inherit
    Represents the calculated value of the border-top-width of the parent's element.

     Examples

    element { 
        border-top-width: thin;
        border-top-style: solid;
        border-top-color: #000;
    }
    
    .element1{
    	border-top: thick solid red;
    }
    .element2{
    	border-top: medium solid orange;
    }
    .element3{
    	border-top: thin solid green;
    }
    
    
    

    Live Sample

    Element 1
    Element 2
    Element 3

    Specifications

    Specification Status Comment
    CSS Backgrounds and Borders Module Level 3 Candidate Recommendation No significant change.
    CSS Level 2 (Revision 1) Recommendation Initial definition.

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support 1.0 1.0 (1.0) 4.0 3.5 1.0 (85)
    Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
    Basic support ? ? ? ? ?

    See also

    Document Tags and Contributors

    Last updated by: kscarfone,
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