<form id="registForm" class="form-horizontal" action="${pageContext.request.contextPath }/register" method="post" style="margin-top: 5px;">

                         <div class="form-group">

                             <label for="username" class="col-sm-2 control-label">用户名</label>

                             <div class="col-sm-6">

                                 <em style="color: red;">*</em>

                                 <input type="text" class="form-control" id="username" name="username" placeholder="请输入用户名">

                             </div>

                         </div>

                         <div class="form-group">

                             <label for="inputPassword3" class="col-sm-2 control-label">密码</label>

                             <div class="col-sm-6">

                                 <em style="color: red;">*</em>

                                 <input type="password" class="form-control" id="password" name="password" placeholder="请输入密码">

                             </div>

                         </div>

 .form-control {

                 display: inline;

                 width: 90%;

                 height: 34px;

                 padding: 6px 12px;

                 font-size: 14px;

                 line-height: 1.42857143;

                 color: #555;

                 background-color: #fff;

                 background-image: none;

                 border: 1px solid #ccc;

                 border-radius: 4px;

                 -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);

                 box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);

                 -webkit-transition: border-color ease-in-out .15s, -webkit-box-shadow ease-in-out .15s;

                 -o-transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;

                 transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;

             }