Hi!
christianch wrote:1- Is there possible to change the "close button" of the slider by "return at previous page" , and how customize js, html or css?
I am not sure what I'm looking at in the screenshot. Do you have a link? The X3 popup will already navigate "back" when clicking browser "back" button after opening a popup. You can try yourself,
go here, click a popup, then click browser "back" and the popup will close. This feature will only work when the opened item has a PID (ID usually from filename) so that an #url can be assigned ... If not, then "history" won't work. If you are adding custom html content (like a map), you can assign a PID manually on the link with
data-popup-pid:
<a href="SRC" data-popup-pid="URL-ID">assign custom url#hash id</a>
christianch wrote:2 - Should I to respect a ratio size image before upload image for obtain a centered view on the grid, or is there any way for to do it automatically ?
I don't understand the question. In your screenshot, you are using a 3:2 aspect ratio, so that the layout becomes UNIFORM (all items will have same size). When you use a set ratio, then obviously some cropping will happen. I see in your screenshot that the image is definitely centered. It's cropped on top/bottom to fit the ratio, but the crop is definitely centered.
If you choose to NOT crop images, then entire images will be visible, but the layout may then be non-uniform and un-even.