<!DOCTYPE html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">

    <link rel="stylesheet" href="CSS/index.css" />
  </head>
  <body>
    <nav class="navbar navbar-toggleable-md navbar-inverse bg-inverse">
      <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>

      <a class="navbar-brand" href="index.php">
        <img src="http://res.cloudinary.com/sonarsystems/image/upload/c_scale,w_150/v1442498022/Sonar-Systems-Circle-Logo_quet2k.png" width="30" height="30" alt="">
      </a>

      <div class="collapse navbar-collapse" id="navbarTogglerDemo02">
        <ul class="navbar-nav mr-auto mt-2 mt-md-0">
          <li class="nav-item active">
            <a class="nav-link" href="#">Główna <span class="sr-only">(aktualna)</span></a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Link</a>
          </li>
        </ul>

        <form class="form-inline my-2 my-lg-0">
          <input class="form-control mr-sm-2" type="text" placeholder="Szukaj">
          
          <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Szukaj</button>
        </form>
      </div>
    </nav>