Reducing spacing between my posts ?

Hey, Gaurav!

Try this:

.list-post .post, .list-post .type-page, .list-post .type-attachment {
position: relative;
margin-bottom: 20px;
min-height: 150px;
}

(I changed the margin-bottom: from 60px to 20px, but you can change it to whatever suits your fancy.)

(I’m assuming you do know how to change the CSS, yes? Either have a child theme, or use a nice plugin like Simple Custom CSS and put the change in there.)

min-height does pretty much what it says. It keeps that block to a minimum height of 150px. I just copied that part over as it was.