需引入bootstrap

            <!-- row -->
            <div class="col-md-4 col-xs-12">
                <div class="white-box">

                    <div class="form-group">
                    <h4>選擇題目類型</h4>
                    <select class="selectpicker" id="test" >
                        <option value="1">選擇題</option>
                        <option value="2">填空題</option>
                        <option value="3">計算題</option>
                        <option value="4">證明題</option>
                    </select>

                        <button class="btn btn-success" onclick="getType()">choose</button>

                    </div>

                    <div class="form-horizontal">


                    </div>
                </div>
            </div>

image.png

    <div class="form-group">
        <label class="col-md-12">YourAnswer</label>
        <div class="col-md-12">
            <select class="selectpicker" id="rightAnswer1" >
                <option value="A">A</option>
                <option value="B">B</option>
                <option value="C">C</option>
                <option value="D">D</option>
            </select>
        </div>
    </div>