As you seen on the demo of the Lucie Grasso and The Tea Cup themes, they have the Slider Posts at the top. First, you go to your dashboard, navigate to Appearance –> Customize –> Slider settings : be sure the box “Show..” is ticked instead of “Hide“.
How to make the posts appear on Slider:
- Underneath post editor, you will see an option : “Add this post to Slider“, check the box to add the current post to Slider
- Be sure your posts have the Featured image, because they are the representative/background pictures.
- !Important: to avoid the posts pull the wrong image size for Slider (too small, too big or not in a same size), you have to resize all images right after installing the theme, click here for the information.