<!DOCTYPE html>
<html>

  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.css" rel="stylesheet" type="text/css">
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css" rel="stylesheet" type="text/css" >
    <link href="style.css" rel="stylesheet" type="text/css">
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.js" type="text/javascript" ></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.js" type="text/javascript"></script>
    <script src="script.js" type="text/javascript"></script>
  </head>

  <body>
    <div class="container">
      <div class="navbar navbar-inverse">
  
          <!-- Header -->
          <div class="navbar-header">
              <button type="button" class="navbar-toggle" 
                      data-toggle="collapse" 
                      data-target=".navbar-collapse">
                  <span class="icon-bar"></span>
                  <span class="icon-bar"></span>
                  <span class="icon-bar"></span>
              </button>
              <a class="navbar-brand" href="#">
                  Bootstrap 3 Skeleton
              </a>
          </div>
          
          <!-- Navbar Links -->
          <div class="collapse navbar-collapse">
              <ul class="nav navbar-nav">
                  <li class="dropdown">
                      <a href="#" class="dropdown-toggle" 
                      data-toggle="dropdown">
                          Normal <span class="caret"></span>
                      </a>
                      <ul class="dropdown-menu" role="menu">
                          <li><a href="#">Action</a></li>
                          <li><a href="#">Another action</a></li>
                          <li><a href="#">Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Long
                              </a></li>
                          <li class="divider"></li>
                          <li><a href="#">Separated link</a></li>
                          <li class="divider"></li>
                          <li><a href="#">One more separated link</a></li>
                      </ul>
                  </li>   
                  <li class="dropdown full-width">
                      <a href="#" class="dropdown-toggle" 
                      data-toggle="dropdown">
                          Full Width <span class="caret"></span>
                      </a>
                      <ul class="dropdown-menu" role="menu">
                          <li><a href="#">Action</a></li>
                          <li><a href="#">Another action</a></li>
                          <li><a href="#">Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Long
                              </a></li>
                          <li class="divider"></li>
                          <li><a href="#">Separated link</a></li>
                          <li class="divider"></li>
                          <li><a href="#">One more separated link</a></li>
                      </ul>
                  </li>          
                  <li class="dropdown fill-width">
                      <a href="#" class="dropdown-toggle" 
                      data-toggle="dropdown">
                          Fill Width <span class="caret"></span>
                      </a>
                      <ul class="dropdown-menu" role="menu">
                          <li><a href="#">Action</a></li>
                          <li><a href="#">Another action</a></li>
                          <li><a href="#">Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Really Long
                              </a></li>
                          <li class="divider"></li>
                          <li><a href="#">Separated link</a></li>
                          <li class="divider"></li>
                          <li><a href="#">One more separated link</a></li>
                      </ul>
                  </li>   
              </ul>
          </div>
      </div>
  </div>
  
  
  
  
  
  
  
  <!-- Post Info -->
  <div style='position:fixed;bottom:0;left:0; background:lightgray;width:100%;'>
      About this SO Question:
      <a href='http://stackoverflow.com/q/26147186/1366033'>
          How To Restrict Width of Bootstrap 3 Dropdown Menu
      </a><br/>
      Fork This Skeleton Here: 
      <a href='http://jsfiddle.net/KyleMit/kcpma/'>
          Bootstrap 3 Skeleton
      </a><br/>
  </div>
  

  </body>

</html>
// Code goes here

.full-width.dropdown {
    position: static;
}
.full-width.dropdown > .dropdown-menu {
    left: 0;
    right: 0;
    position: absolute;
}
.full-width.dropdown > .dropdown-menu > li > a {
   white-space: normal; 
}


.fill-width.dropdown {
    position: static;
}
.fill-width.dropdown > .dropdown-menu {
    left: auto;
    position: absolute;
}
.fill-width.dropdown > .dropdown-menu > li > a {
   white-space: normal; 
}