引导程序的 mr-auto 类无法正常工作？

问题描述

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
                    <ul class="navbar-nav **mr-auto**">
                        <li class="nav-item active">
                            <a class="nav-link" href="homepage.aspx">Home</a>
                        </li>
                        <li class="nav-item active">
                            <a class="nav-link" href="#">About Us</a>
                        </li>
                        <li class="nav-item active">
                            <a class="nav-link" href="#">Terms</a>
                        </li>

                    </ul>

                    <ul class="navbar-nav">
                        <li class="nav-item active">
                            <asp:LinkButton class="nav-link" ID="LinkButton4" runat="server">View Books</asp:LinkButton>
                        </li>
                        
                        <li class="nav-item active">
                            <asp:LinkButton class="nav-link" ID="LinkButton1" runat="server">User Login</asp:LinkButton>
                        </li>
                        <li class="nav-item active">
                            <asp:LinkButton class="nav-link" ID="LinkButton2" runat="server">Sign Up</asp:LinkButton>
                        </li>
                        <li class="nav-item active">
                            <asp:LinkButton class="nav-link" ID="LinkButton3" runat="server">logout</asp:LinkButton>
                        </li>

                        <li class="nav-item active">
                            <asp:LinkButton class="nav-link" ID="LinkButton7" runat="server">Hello user</asp:LinkButton>

                        </li>
                    </ul>
                </div>

See the navigation there is some margin left between the logo and the buttons

我导入了这个代码形式的引导程序，但第一个没有完全左对齐，但第二个右对齐到右手边see I have inspected this but it looks fine to me

解决方法

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