adjust words font size & add post time

Hi Yaphoon,

I have added the following in Enfold > General Styling > Quick CSS:
To remove the words uncategorized

#top #main .avia-content-slider .minor-meta {
    display: none;
}

To change the font size (Just change the value as you see fit)

#top #main .avia-content-slider .slide-entry-title {
    font-size: 16px;
}

As for the last one, since you are using the Advanced Layout Builder, you need to add it manually via Text Block, or you can add this in your child theme’s functions.php:

function post_published_date(){
    return get_the_date();
}

add_shortcode( 'post_published', 'post_published_date' );

Then add a Text Block and put this shortcode inside it:

[post_published]

Then it should automatically post the published date of the current post.
Hope it helps.

Best regards,
Nikko