How to Add Different Background Image to Every Category

Hi

I want to assign as image as background to every category, i am sharing a screenshot here to explain what exactly i am looking for.

https://genvideoshd.com/wp-content/uploads/2016/02/categorry.jpg

using below css i have achieved this:

https://tamilyogii.com/wp-content/uploads/2016/02/achived.jpg

li.cat-item-42 {
background-image: url(‘image source’);
line-height: 150px;
width: 250px;
text-align: center;
font-weight: 900;
display: block;
}

But i need to do this for every category manually, is there any other easy solution.