What happens in bootstrap 3 if there are more than 12 columns in a row?

What happens in bootstrap 3 if there are more than 12 columns in a row? Please provide examples with a code.
For example:

<div class="row">     <div class="col-sm-13 form-group">         <label class="control-label col-sm-4">Лаборатория</label>         <div class="col-sm-12"><select class="form-control" wicket:id="testType"></select></div>     </div>     <div class="col-sm-10 form-group">         <label class="control-label col-sm-4">Упорядочить</label>         <div class="col-sm-10"><select class="form-control" wicket:id="sortOrder"></select></div>     </div>     <div class="col-sm-4 text-right indent">         <button wicket:id="show" class="btn btn-primary">             <span class="glyphicon glyphicon-search"></span>&nbsp;Показать         </button>     </div> </div> 

How to put this on row? Help me understand this.

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1 Answer(s)

Since anything beyond 12 isn’t defined in the Bootstrap CSS you’ll see nothing applied to the element you classify with those names. So you’ll only see inherited properties of elements/body/etc. applied

<link href="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet"/>  <div class="container">     <div class="navbar navbar-default">         <div class="navbar-header">             <a class="navbar-brand" href="#">Bootstrap 3</a>         </div>         <div class="navbar-collapse collapse">             <ul class="nav navbar-nav">                 <li class="dropdown active">                     <a href="#" class="dropdown-toggle" data-toggle="dropdown">Getting started <b class="caret"></b></a>                     <ul class="dropdown-menu">                         <li><a href="http://getbootstrap.com/getting-started/#download">Download Bootstrap</a></li>                         <li class="divider"></li>                         <li class="dropdown-header">Examples</li>                         <li><a href="http://getbootstrap.com/getting-started/#template">Basic template</a></li>                         <li><a href="http://getbootstrap.com/examples/starter-template/">Starter template</a></li>                         <li><a href="http://getbootstrap.com/examples/grid/">Grids</a></li>                         <li><a href="http://getbootstrap.com/examples/jumbotron/">Jumbotron</a></li>                         <li><a href="http://getbootstrap.com/examples/navbar/">Navbar</a></li>                         <li><a href="http://getbootstrap.com/examples/signin/">Sign-in page</a></li>                         <li><a href="http://getbootstrap.com/examples/sticky-footer/">Sticky footer</a></li>                         <li><a href="http://getbootstrap.com/examples/offcanvas/">Offcanvas</a></li>                         <li><a href="http://getbootstrap.com/examples/carousel/">Carousel</a></li>                         <li><a href="http://getbootstrap.com/examples/theme/">Theme</a></li>                                                 <li class="divider"></li>                         <li class="dropdown-header">Compatibility</li>                         <li><a href="http://getbootstrap.com/getting-started/#migration">Migrating from 2.x to 3.0</a></li>                         <li><a href="http://getbootstrap.com/getting-started/#browsers">Browser support</a></li>                         <li><a href="http://getbootstrap.com/getting-started/#third-parties">Third party support</a></li>                     </ul>                 </li>                 <li><a href="http://getbootstrap.com/css">CSS</a></li>                 <li><a href="http://getbootstrap.com/components">Components</a></li>                 <li><a href="http://getbootstrap.com/javascript">JavaScript</a></li>             </ul>             <ul class="nav navbar-nav navbar-right">                 <li class="active"><a href="http://getbootstrap.com/customize">Customize</a></li>             </ul>         </div>     </div>         <div class="jumbotron">         <h1>Twitter Bootstrap 3.0</h1>         <p class="lead">Starter template with CSS and JS included.</p>       </div>              <div class="col-sm-20">         Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV. Col-Sm-20 DIV.        </div> <br />       <div class="col-sm-12" >         Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV. Col-Sm-12 DIV.       </div> <br />       <div class="col-md-100">        Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  Col-Sm-100 DIV.  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