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How to use border-collapse attribute

青灯夜游

Feb 16, 2019 am 09:56 AM

css

The border-collapse attribute is used for table elements. You can set the two borders of the table to merge into a single border.

How to use border-collapse attribute

CSS border-collapse property

border-collapse property sets whether the border of the table is merged into A single border, or separated as in standard HTML.

It has two values:

separate: Default value, the borders are separated; each cell will display its own border

collapse : If possible, the borders will be merged into a single border (at this time, the border-spacing and empty-cells properties have no effect).

Note: All major browsers support the border-collapse attribute.

Note: border-collapse attribute, if !DOCTYPE is not specified, may have unexpected effects.

Examples of using the CSS border-collapse attribute:

The following is a simple code example to see how to use the border-collapse attribute:

<!DOCTYPE html>
<html>
   <head>
     <meta charset="UTF-8">
      <style type = "text/css">
      .box{
      width: 400px;
      margin: 100px auto;
      }
         table.one {border-collapse:collapse;}
         table.two {border-collapse:separate;}
         
         td.a {
            border-style:dotted; 
            border-width:3px; 
            border-color:#000000; 
            padding:10px 50px;
         }
         td.b {
            border-style:solid; 
            border-width:3px; 
            border-color:#333333; 
            padding:10px 50px;
         }
      </style>
   </head>
   <body>
   <div class="box">
      <table class = "one">
         <caption>边框折叠示例</caption>
         <tr><td class = "a">单元格A折叠示例</td></tr>
         <tr><td class = "b">单元格B折叠示例</td></tr>
      </table>
      <br />
      
      <table class = "two">
         <caption>边框分隔示例</caption>
         <tr><td class = "a">单元格A分隔示例</td></tr>
         <tr><td class = "b">单元格B分隔示例</td></tr>
      </table>
    </div>
   </body>
</html>

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How to use border-collapse attribute

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