html - Bootstrap search field with icon in navigation header not appearing correctly -


i'm attempting add search box header bootstrap 3 template. template i'm using purchased bootstrap themes page , light ui dashboard theme.

i found answer on stack overflow it's not appearing correctly (it appears incorrectly in both chrome , edge).

how add search box icon navbar in bootstrap 3?

i modified code include search box in header glyphicon doesn't display , search box out of alignment. here screen shot.

enter image description here

my code follows:

@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css');
<form runat="server">    <!-- fixed navbar -->    <nav class="navbar navbar-inverse navbar-fixed-top">      <div class="container">        <div class="navbar-header">          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">            <span class="sr-only">toggle navigation</span>            <span class="icon-bar"></span>            <span class="icon-bar"></span>            <span class="icon-bar"></span>          </button>          <a class="navbar-brand" href="/">crown ent.</a>        </div>        <div id="navbar" class="navbar-collapse collapse">            <ul class="nav navbar-nav navbar-left">            <li role="presentation" id="dashboard"><a href="./">dashboard</a></li>            <li role="presentation" id="workorders"><a href="workorders.aspx">work orders</a></li>            <li role="presentation" id="invoices"><a href="invoices.aspx">invoices</a></li>            <li role="presentation" id="accounts"><a href="accounts.aspx">accounts</a></li>            <li role="presentation" id="people"><a href="people.aspx">people</a></li>          </ul>            <ul class="nav navbar-nav navbar-right">            <li><a runat="server" href="~/admin">settings</a></li>            <li><a runat="server" href="~/admin">help</a></li>          </ul>            <form class="navbar-form" style="padding-top:5px;">            <div class="form-group" style="display:inline;margin-top:5px;">              <div class="input-group" style="display:table;">                <span class="input-group-addon"><i class="glyphicon glyphicon-search"></i></span>                <input class="form-control" name="search" placeholder="search here" id="crown-search" autocomplete="off" autofocus="autofocus" type="text">              </div>            </div>          </form>          </div>      </div>    </nav>      <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0msbjdehialfmubbqp6a4qrprq5ovfw37prr3j5elqxss1yvqotnepnhvp9aj7xs" crossorigin="anonymous"></script>

i can't see wrong code. adjusting css margin in attempt fix positioning ineffective.

upd. removed first line <form runat="server"> , used code

  <form class="navbar-form" role="search">     <div class="form-group">       <div class="input-group"> 

instead of

  <form class="navbar-form" style="padding-top:5px;">     <div class="form-group" style="display:inline;margin-top:5px;">       <div class="input-group" style="display:table;"> 

and i've added css make form wider. please check result.

@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css');    #navbar .navbar-form {    overflow: hidden;  }  #navbar .form-group,  #navbar .input-group {    width: 100%;  }  #navbar .input-group-addon {    width: 39px;  }
<!-- fixed navbar -->  <nav class="navbar navbar-inverse navbar-fixed-top">    <div class="container">      <div class="navbar-header">        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">          <span class="sr-only">toggle navigation</span>          <span class="icon-bar"></span>          <span class="icon-bar"></span>          <span class="icon-bar"></span>        </button>        <a class="navbar-brand" href="/">crown ent.</a>      </div>      <div id="navbar" class="navbar-collapse collapse">          <ul class="nav navbar-nav navbar-left">          <li role="presentation" id="dashboard"><a href="./">dashboard</a></li>          <li role="presentation" id="workorders"><a href="workorders.aspx">work orders</a></li>          <li role="presentation" id="invoices"><a href="invoices.aspx">invoices</a></li>          <li role="presentation" id="accounts"><a href="accounts.aspx">accounts</a></li>          <li role="presentation" id="people"><a href="people.aspx">people</a></li>        </ul>          <ul class="nav navbar-nav navbar-right">          <li><a runat="server" href="~/admin">settings</a></li>          <li><a runat="server" href="~/admin">help</a></li>        </ul>          <form class="navbar-form" role="search">          <div class="form-group">            <div class="input-group">              <span class="input-group-addon"><i class="glyphicon glyphicon-search"></i></span>              <input class="form-control" name="search" placeholder="search here" id="crown-search" autocomplete="off" autofocus="autofocus" type="text">            </div>          </div>        </form>        </div>    </div>  </nav>    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0msbjdehialfmubbqp6a4qrprq5ovfw37prr3j5elqxss1yvqotnepnhvp9aj7xs" crossorigin="anonymous"></script>