         </div>
        </div>

        <h6>导航栏</h6>
        <div class="mb-1">
            <div class="custom-control custom-switch">
                <input type="checkbox" onclick="toggleNavFix()" class="custom-control-input" id="navFixSwitch">
                <label class="custom-control-label" for="navFixSwitch">固定</label>
            </div>
        </div>

        <h6>导航栏颜色</h6>
        <div class="mb-4">
            <div class="d-flex">
                <select id="nav