How can I fix the issue of the scrollbar line not being displayed on iOS devices for the horizontal scroll gallery on my Webflow site?

If the scrollbar line is not being displayed on iOS devices for your horizontal scroll gallery in Webflow, there are a few possible solutions you can try:

1. Check the overflow property: Make sure that the parent container of your horizontal scroll gallery has the correct CSS property value for overflow. Set it to `auto` or `scroll` to enable the scrollbar. In Webflow, you can check and adjust this property in the Styles panel by selecting the parent container and navigating to the Overflow section.

2. Adjust the container width: Ensure that the width of your horizontal scroll container is wider than the screen width of the iOS device. If the container width is smaller than the viewport, iOS devices may not display the scrollbar. You can set the width to be 100% of the viewport width using percentage values in the Width field of the Styles panel.

3. Customize the scrollbar appearance: iOS devices have their own default styling for scrollbars, which may not be visible depending on the background or content of your site. You can customize the scrollbar appearance using CSS. For example, you can use the `::-webkit-scrollbar` selector to target the scrollbar and apply custom styles like colors, width, and opacity. Keep in mind that this will only affect iOS devices and web browsers that use the WebKit rendering engine.

Here's an example of how to customize the scrollbar appearance:

```css
/* Target the scrollbar */
::-webkit-scrollbar {
width: 8px;
}

/* Track */
::-webkit-scrollbar-track {
background: #f1f1f1;
}

/* Handle */
::-webkit-scrollbar-thumb {
background: #888;
}

/* Handle on hover */
::-webkit-scrollbar-thumb:hover {
background: #555;
}
```

Add the above CSS code to your Webflow project by going to the Designer, selecting the page or element containing the horizontal scroll gallery, and add a new `