How to make images on main portfolio page smaller

[fatcatgraphics]

How can I make the images on the main portfolio page smaller?

Heres the page: https://palilastudio.com/portfolio/
Id like these to be about 25% smaller

Thanks for the help!
Rena

[Joao]

Hi Rena,

Please add the following code to Theme Options CSS

.x-iso-container.cols-2>.hentry {
    width: 37%;

}

Hope it helps!