d-headers">Fixed headers</option>
    <option id="gradient-backgrounds">Gradient backgrounds</option>
    <option id="interlocked-slides">Interlocked Slides (paid)</option>
    <option id="looping">Looping</option>
    <option id="methods">Methods</option>
    <option id="navigation-vertical">Vertical navigation dots</option>
    <option id="navigation-horizontal">Horizontal navigation dots</option>
    <option id="navigation-tooltips">Navigation tooltips</option>
    <option id="no-anchor">No ancho