<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="navbar navbar-default navbar-fixed-top"> <div class="container"> <div class="navbar-header"> <button class="navbar-toggle" type="button" data-toggle="collapse" data-target="#navbar-main"> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <a class="navbar-brand" href="#"><img src="imagenes/imagen1.png" alt="INICIO" width="100" height="106" /></a> </div> <center> <div class="navbar-collapse collapse" id="navbar-main"> <form action="Ingreso.php" method="POST" class="navbar-form navbar-right" role="search"> <div class="form-group"> <input type="text" class="form-control" id="username" name="username" placeholder="Username"value="" style="max-width: 95%;max-height: 30px;" class="img-responsive" onfocus="this.value = '';" /> </div> <div class="form-group"> <input type="text" class="form-control" id="password" name="password" placeholder="Password"value="" style="max-width: 95%;max-height: 30px;" class="img-responsive" onfocus="this.value = '';" /> </div> <button type="submit" class="btn btn-default" name="login" >Entrar</button> </form> </div> </center> </div> </div>