Do you have a link to your site where the images are larger? I just tested on my local install with the theme and the thumbnails match up with the size in the demo for me.
Strange. Please check http://laggarebo.se
Try using the Hueman Dynamic Tabs widget instead of Hueman Posts and it should display the smaller thumbnails.
Hello Pillan,
You can also inspect your pages and write some css rules in the custom css setting of the live customizer.
Useful resources for WordPress site customization :
https://docs.presscustomizr.com/article/72-basics-of-css-and-html-for-wordpress-themes
https://docs.presscustomizr.com/article/63-css-resources-for-wordpress-developers
Thank you. Got it with the Dynamic Tabs widget!
Thank you too, emranemranx for the custom css links!