Bootstrap list-inline沒有用

Question

1.Bootstrap裡面用了list-inline但一樣顯示一列
想請教高手指導(困擾了很久)..不知道是不是少打了什麼

2.<div class="bottom">

        <div class="container clearfix">
            <div class="copyright float-left">
                Lorem ipsum dolor sit amet, consectetur adipisicing elit.            </div>
            <div class="float-right">
                <ul class="list-inline">
                    <li>
                        <a href="#">f</a>
                    </li>
                    <li>
                        <a href="#">t</a>
                    </li>
                    <li>
                        <a href="#">g</a>
                    </li>
                    <li>
                        <a href="#">b</a>
                    </li>
                    <li>
                        <a href="#">c</a>
                    </li>
                </ul>
            </div>
        </div>
    </div></div>

3.以下是我的code打出來後的樣子
最右下角的地方還是呈現一列...

4.想說用float:left但好像也沒用..求解