<div class="container">
 <div class="row">
  <div class="col-md-8 col-md-offset-2">
  <table class="table table-bordered table-striped table-hover">
  <tr>
  <th>标题一</th>
  <th>标题二</th>
  <th>标题三</th>
  </tr>
  <tr>
  <td>1</td>
  <td>2</td>
  <td>3</td>
  </tr>
  <tr>
  <td>4</td>
  <td>5</td>
  <td>6</td>
  </tr>
 </table>
  </div>
 </div>
 </div>

 <div class="container">
 <form>
  <div class="form-group">
  <label for="exampleInputEmail1">Email address</label>
  <input type="email" class="form-control" id="exampleInputEmail1"
   placeholder="Enter email">
  </div>
  <div class="form-group">
  <label for="exampleInputPassword1">Password</label>
  <input type="password" class="form-control"
   id="exampleInputPassword1" placeholder="Password">
  </div>
  <div class="checkbox">
  <label> <input type="checkbox"> Check me out
  </label>
  </div>
  <button type="submit" class="btn btn-default">Submit</button>
 </form>
 </div>

 <div class="container">
 <form class="form-inline">
  <div class="form-group">
  <label for="exampleInputEmail1" class="sr-only">Email address</label>
  <input type="email" class="form-control" id="exampleInputEmail1"
   placeholder="Enter email">
  </div>
  <div class="form-group">
  <label for="exampleInputPassword1">Password</label>
  <input type="password" class="form-control"
   id="exampleInputPassword1" placeholder="Password">
  </div>
  <div class="checkbox">
  <label> <input type="checkbox"> Check me out
  </label>
  </div>
  <button type="submit" class="btn btn-default">Submit</button>
 </form>
 </div>

 <div class="container">
 <form class="form-horizontal">
  <div class="form-group">
   <label for="exampleInputEmail1" class="col-md-2 control-label">Email
   address</label>
  <div class="col-md-8">
   <input type="email" class="form-control" id="exampleInputEmail1"
   placeholder="Enter email">
  </div>
  </div>
  <div class="form-group" >
   <label for="exampleInputPassword1" class="col-md-2 control-label">Password</label>
  <div class="col-md-8">
   <input type="password" class="form-control"
   id="exampleInputPassword1" placeholder="Password">
  </div>
  </div>
  <div class="checkbox col-md-offset-2">
  <label> <input type="checkbox"> Check me out
  </label>
  </div>
  <button type="submit" class="btn btn-default col-md-offset-2">Submit</button>
 </form>
 </div>

<div class="container">
 <form class="form-horizontal">
  <div class="form-group">
  <label for="exampleInputEmail1" class="col-md-2 control-label">Email
   address</label>
  <div class="col-md-8">
   <input type="email" class="form-control" id="exampleInputEmail1"
   placeholder="Enter email" required>
  </div>
  </div>
  <div class="form-group">
  <label for="password1" class="col-md-2 control-label">Password</label>
  <div class="col-md-8">
   <input type="password" class="form-control"
   id="password1" placeholder="Password" required onchange="checkPassword()">
  </div>
  </div>
<div class="form-group">
  <label for="password2" class="col-md-2 control-label" onchange="checkPassword()"> Password2</label>
  <div class="col-md-8">
   <input type="password" class="form-control"
   id="password2" placeholder="Password2" required>
  </div>
  </div>
  <div class="checkbox col-md-offset-2">
  <label> <input type="checkbox"> Check me out
  </label>
  </div>
  <button type="submit" class="btn btn-default col-md-offset-2">Submit</button>
 </form>
 </div>
 
 <script>
 function checkPassword() {
  var pwd1 = $("#password1").val();
  var pwd2 = $("#password2").val();
  if (pwd1 != pwd2) {
  document.getElementById("password1").setCustomValidity("两次输入的密码不一致");
  } else {
  document.getElementById("password1").setCustomValidity("");
  }
  
 }
 </script>

 <div class="container">
 <button type="button" class="btn btn-default btn-block">Default</button>
 <button type="button" class="btn btn-primary btn-block">Primary</button>
 <button type="button" class="btn btn-success">Success</button>
 <button type="button" class="btn btn-info">Info</button>
 <button type="button" class="btn btn-warning">Warning</button>
 <button type="button" class="btn btn-danger">Danger</button>
 <button type="button" class="btn btn-link">链接</button>
 <a class="btn btn-default" href="#" role="button">Link</a>
 <button class="btn btn-default" type="submit">Button</button>
 <input class="btn btn-default" type="button" value="Input">
 <input class="btn btn-default" type="submit" value="Submit">
 </div>