问如何使用引导创建响应输入和按钮

EN

<style type="text/css">
    .smaller-input {
        width: 80%;
        margin: 0px auto 15px auto;
    }
</style>

<div class="container">
    <div class="row">
        <div class="col-md-12 text-center">
            <div class="form-group">
                <div class="input-group smaller-input">
                  <input type="text" class="form-control" />
                  <span class="input-group-addon">
                      <span class="glyphicon glyphicon-earphone"></span>
                  </span>
                </div>
            </div>
        </div>
    </div>
    <div class="row">
        <div class="col-md-12 text-center">
            <div class="form-group">
                <div class="btn btn-default">Google Search</div>
                <div class="btn btn-default">I'm Feeling Lucky</div>
            </div>
        </div>
    </div>
</div>

<div class="row">
        <div class="col-md-6 col-md-offset-3 text-center">
        your html (button/input) here
     </div>
</div>