css - 在不同的屏幕尺寸下启用 Bootstrap 导航按钮

Question

我正在尝试在响应式设备上启用切换按钮，但最小为 900 像素，默认大小为 768px。我尝试自定义的代码与 Bootstrap 示例相同。

感谢您的帮助!

<nav class="navbar navbar-default">
    <div class="container-fluid">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                 <span class="icon-bar"></span>
                 <span class="icon-bar"></span>
                 <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="#">Brand</a>
        </div>
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
                <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a>
                </li>
                <li><a href="#">Link</a>
                </li>
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>
                    <ul class="dropdown-menu" role="menu">
                        <li><a href="#">Action</a>
                        </li>
                        <li><a href="#">Another action</a>
                        </li>
                        <li><a href="#">Something else here</a>
                        </li>
                        <li class="divider"></li>
                        <li><a href="#">Separated link</a>
                        </li>
                        <li class="divider"></li>
                        <li><a href="#">One more separated link</a>
                        </li>
                    </ul>
                </li>
            </ul>
        </div>
    </div>
</nav>

Answer 1

例如

@media(max-width: 900px) {
    .dropdown-toggle {
         display: inline-block;
     }
}

希望这对您有所帮助。