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CSS | border-bottom-width Property

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  • Last Updated : 01 Aug, 2022

The border-bottom-width property in CSS is used to set a specific width to the bottom border of an element. The border-bottom-style or border-style property is used for the element before using the border-bottom-width property. 


border-bottom-width: length|thin|medium|thick|initial|inherit;

Property Values: The border-bottom-width property values are listed below:

  • thin: It is used to set the thin border of the bottom.
  • medium: It is used to set medium sized bottom border. It is the default value.
  • thick: It is used to set thick bottom border.
  • length: It is used to set the width of the border. It does not takes negative value.



<!DOCTYPE html>
            border-bottom-width property
            #thin {
                border-color: green;
                border-bottom-style: solid;
                border-bottom-width: thin;
            #medium {
                border-color: green;
                border-bottom-style: solid;
                border-bottom-width: medium;
            #thick {
                border-color: green;
                border-bottom-style: solid;
            #length {
                border-color: green;
                border-bottom-style: solid;
                border-bottom-width: 20px;
    <body style = "text-align:center">
        <h1 style = "color:green">GeeksforGeeks</h1>
        <h3>border-bottom-width property</h3>
        <div id="thin">
            border-bottom-width: thin;
        <div id="medium">
            border-bottom-width: medium;
        <div id="thick">
            border-bottom-width: thick;
        <div id="length">
            border-bottom-width: length;



Supported Browsers: The browser supported by border-bottom-width property are listed below:

  • Google Chrome 1.0 and above
  • Edge 12.0 and above
  • Internet Explorer 4.0 and above
  • Firefox 1.0 and above
  • Opera 3.5 and above
  • Safari 1.0 and above

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