到目前为止，我已经从网上自学了CSS。我觉得我做得很好，但我有一个很大的时间试图编辑Navbar。我目前正在使用Boostrap，但我有一个关于CSS的问题，特别是Navbar功能。

  <div class="navbar-wrapper">
  <!-- Wrap the .navbar in .container to center it within the absolutely positioned parent. -->
  <div class="container">

    <div class="navbar navbar-inverse">
      <div class="navbar-inner">
        <!-- Responsive Navbar Part 1: Button for triggering responsive navbar (not covered in tutorial). Include responsive CSS to utilize. -->
        <button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
        </button>
        <a class="brand" href="#">------------</a>