How to change upluad button witth CSS "Post Image" to look like

Hello,
in form i added post image button but as there are allot text or even in mobile phones this button is not very good to find. I looking how to make it bigger, change text and background color and add icon.
Now it look like this

to something like this with icon
Screenshot 2023-01-09 201818

Hello. The Post Image field uses the browser dialog for the button, so a button like you showed will not be possible there. The multi-file upload field offers a more customizable button that looks like this by default:

That button can be customized with a filter:

Using that filter won’t put the image in the Media Library by default though. If you wanted to use that type file upload field instead, you would need to perform some additional steps to associate the upload with the post, or move the image to the media library. If you have any other questions, please let us know.