button not clickable

i have set buttons & urls, but buttons are not clickable:-\ the 1st slide has this code:

<li style="float: left; list-style: outside none none; position: relative; width: 860px;" class="bx-clone">
            <img src="https://i1.wp.com/mycascadescenter.org/wp-content/uploads/2020/04/HolidayShindig.jpg?w=960&ssl=1" width="860" height="573">
            <div class="wp1s-caption-wrapper wp1s-caption-type-2 wp1s-caption-middlecenter">
            <h1 class="wp1s-caption-title">Photo Gallery</h1>
            <h2 class="wp1s-caption-content"></h2>
                        <a href="https://mycascadescenter.org/gallery/highlight-pics-of-2019/" class="wps1-readmore-button">Photo Gallery</a>
                        </div>
        </li>

and css:

.wp1s-caption-wrapper.wp1s-caption-type-2 .wps1-readmore-button, .wp1s-caption-wrapper.wp1s-caption-type-3 .wps1-readmore-button {
    display: none;
}

changing to display: inline !important;
doesn’t fix it:-\

The page I need help with: [log in to see the link]