引导程序侧栏上图标旁边的文本对齐方式

我正在尝试修改 dashboard 从引导。我在侧边栏上的文本之前添加了图标,类似于 this . 我确实检查了后者,但它没有什么特殊的CSS代码来使文本具有统一数量的空间和对齐。

这是我的代码:

<ul class="nav nav-pills flex-column">
    <li class="nav-item">
        <a class="nav-link" href="/">
            <div>
                <i id="icon-dashboard" class="fa fa-tachometer icon" aria-hidden="true"></i>
                <span class="nav-link-text">Dashboard</span> <span class="sr-only">(current)</span>
            </div>
        </a>
    </li>
    <li class="nav-item">
        <a class="nav-link" href="/books">
            <div>
                <i id="icon-book" class="fa fa-book icon" aria-hidden="true"></i>
                <span class="nav-link-text">Book</span>
            </div>
        </a>
    </li>
    <li class="nav-item">
        <a class="nav-link" href="/transactions">
            <div>
                <i id="icon-transaction" class="fa fa-handshake-o icon" aria-hidden="true"></i>
                <span class="nav-link-text">Transaction</span>
            </div>
        </a>
    </li>
    <li class="nav-item">
        <a class="nav-link" href="/reports">                                
            <div></div>
            <div>
                <i id="icon-report" class="fa fa-bar-chart icon" aria-hidden="true"></i>
                <span class="nav-link-text">Report</span>
            </div>
        </a>
    </li>
</ul>

请帮我弄清楚。我不知道怎么做。谢谢