保持原始的12列引导，不要自定义它。你唯一需要做的修改是一些css之后的原始引导响应css，像这样:

下面的代码已经为Bootstrap 2.3.2进行了测试:

<style type="text/css">
/* start of modification for 5 columns */
@media (min-width: 768px){
    .fivecolumns .span2 {
        width: 18.297872340425532%;
        *width: 18.2234042553191494%;
    }
}
@media (min-width: 1200px) {
    .fivecolumns .span2 {
        width: 17.9487179487179488%;
        *width: 17.87424986361156592%;
    }
}
@media (min-width: 768px) and (max-width: 979px) {
    .fivecolumns .span2 {
        width: 17.79005524861878448%;
        *width: 17.7155871635124022%;
    }
}
/* end of modification for 5 columns */
</style>

和html:

<div class="row-fluid fivecolumns">
    <div class="span2">
        <h2>Heading</h2>
        <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>
        <p><a class="btn" href="#">View details &raquo;</a></p>
    </div>
    <div class="span2">
        <h2>Heading</h2>
        <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>
        <p><a class="btn" href="#">View details &raquo;</a></p>
    </div>
    <div class="span2">
        <h2>Heading</h2>
        <p>Donec sed odio dui. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Vestibulum id ligula porta felis euismod semper. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
        <p><a class="btn" href="#">View details &raquo;</a></p>
    </div>
    <div class="span2">
        <h2>Heading</h2>
        <p>Donec sed odio dui. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Vestibulum id ligula porta felis euismod semper. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
        <p><a class="btn" href="#">View details &raquo;</a></p>
    </div>
    <div class="span2">
        <h2>Heading</h2>
        <p>Donec sed odio dui. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Vestibulum id ligula porta felis euismod semper. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
        <p><a class="btn" href="#">View details &raquo;</a></p>
    </div>
</div>

注意:即使span2乘以5不等于12列，你明白了吧:)

可以在这里找到一个工作示例http://jsfiddle.net/v3Uy5/6/

<div class="equal row-fluid">
    <div class="span2"></div>
    <div class="span2"></div>
    <div class="span2"></div>
    <div class="span2"></div>
    <div class="span2"></div>
</div>

.equal .span2 {
    width: 20%;
}

它可以通过嵌套和使用一点css覆盖来完成。

<div class="col-sm-12">
<div class="row">
  <div class="col-sm-7 five-three">
    <div class="row">
      <div class="col-sm-4">
      Column 1
      </div>
      <div class="col-sm-4">
      Column 2
      </div>
      <div class="col-sm-4">
      Column 3
      </div><!-- end inner row -->
    </div>
  </div>
  <div class="col-sm-5 five-two">
    <div class="row">
      <div class="col-sm-6">
        Col 4
      </div>
      <div class="col-sm-6">
      Col 5
      </div>
    </div><!-- end inner row -->
  </div>
</div>​<!-- end outer row -->

然后是css

@media  (min-width: 768px) {
div.col-sm-7.five-three {
width: 60% !important;
}

div.col-sm-5.five-two {
width: 40% !important;
}

}

下面是一个例子:5等列的例子

这是我写的关于代码墙的全部内容

在bootstrap 3中有5个相等的列

与flexbox http://output.jsbin.com/juziwu

.flexrow { 显示:flex; 背景:浅灰色;/ * * /调试 ｝ .flexrow > * { flex: 1; 保证金:1 em; 大纲:自动绿色; ｝ < div class = " flexrow”> < div >…< / div > < div >…< / div > < div >…< / div > < div >。< br >。< / div > < div >…< / div > < / div >

在Bootstrap 3中启用5列的另一种方法是修改Bootstrap默认使用的12列格式。然后创建一个20列的网格(在Bootstrap网站上使用自定义或使用LESS/SASS版本)。

要在引导网站上进行自定义，请访问自定义和下载页面，将变量@grid-columns从12更新为20。然后，您将能够创建4以及5列。

用于引导5或更高版本

可以使用row-cols- class名称。

例如:row-col -1, row-col -5, row-col -lg-5

<div class="container">
  <div class="row row-cols-5">
     // place your all cols here
  </div>
</div>

更多信息请阅读官方文档