Front page featured images

How do I change the size of the featured image to make them square and reduce the padding between the images?

 

Hello,

1. Paste the code given below in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.content img {
width: 204px;
height: 204px;
}

This will solve square issue.

2. Paste the code given below in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.one_fourth {
width: 24%!important;
margin-right: 1%!important;
}
p{
Padding-right:10px;
}
#content {
width: 912px;
}

You can adjust these value as per your requirement,
this will reduce the spaces between the featured imaged.