HTML:Ex:Getbootstrap.com/components/Navbar/Forms

<nav class="navbar navbar-default">

     <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
         data-target="#bs-example-navbar-collapse-2-" aria-expanded="false">
       Toggle navigation
       
       
       
     </button>
     <a class="navbar-brand" href="#">Brand</a>

     <form class="navbar-form navbar-left" role="search">

         <input class="form-control" placeholder="Search" type="text">

       <button type="submit" class="btn btn-default">Submit</button>
     </form>

</nav>