Hi Mehtaz, first things first, Happy New Year!!!!
second, thanks for your answer.
I have made the change you suggested, that didn´t make any changes, in fact custom.css was not called by the page; I realized that the original code says .layout-blog .blog .items-leading .carousel .carousel-inner .newskit-item-wrap .intro-image > a img { width: 300px !important; }
so I added the > a img, that did the page to load the custom.css styleshit, though it made no chages at all.
I have been taken a more deep look and realized that
the active item is loading the large version of the image, as well as after leading articles do, but in your demo, the leading article uses the thumbnail version of the image, even though after leading articles use large version.If I don´t explain myself correctly, sorry for that, I have taken a couple of screen captures for you to see.
https://youtu.be/H-dGVb7v6JU
https://youtu.be/alc-8g4nQaY
I don´t know if this could work as a clue. I hope you can find where the problem is.
thank you again