Thumbnails shape in popular post widget is not complete


The thumbnails or post main image on homepage is in complete form but in popular post widget is not complete, half image or image without edges don’t look good. can be seen in screenshot, kindly guide me to fit the image to this adjusted dimension.


As a I have tutorial but I found this site but I don’t want to copy that post so go to here

How to increase Images/Thumbnails Size of Popular Post for Blogger