小编chi*_*.ks的帖子

我试图在按钮控件中放置一个glyphicon但按钮文本和glyphicon不在同一行.按钮文字略低于下方,与glyphicon不平行

<button type="button" class="btn btn-default" aria-label="my button" style="border: 0px">
    <span class="glyphicon glyphicon-plus-sign" style="color:#a0a0a0; font-size: 30px" aria-hidden="true"></span>
    My Button Text
</button>

我只想问为什么引导程序中的下拉子菜单不起作用,我只是按照此链接中的说明:(http://getbootstrap.com/2.3.2/components.html)但仍然是下拉菜单上的子菜单没有出现.顺便说一下,我没有更改或覆盖CSS中的类.

这是我的代码!:)

<li class='dropdown'><a class='dropdown-toggle active' data-toggle='dropdown' href='#'><img src = 'images/forbank.png' height = 35 width = 35>Banking<span class='caret'></span></a>
                <ul class='dropdown-menu'>
                    <li class = 'dropdown-submenu'><a tabindex='-1' href='#'><span class = 'glyphicon glyphicon-cog'> </span>  Transaction</a>
                        <ul class='dropdown-menu' role = 'menu'>
                            <li><a tabindex='-1' href='#'> Withdrawal / Deposit </a></li>
                            <li><a tabindex='-1' href='#'> Fixed Deposit </a></li>
                        </ul>
                    </li>
                    <li role='separator' class='divider'></li>
                    <li><a href='#'><span class='glyphicon glyphicon-list-alt'> </span> Summaries </a></li>
                    <li><a href='#'><span class='glyphicon glyphicon-wrench'> </span>  Settings </a></li>
                </ul>
            </li>