Smaller Image in Mobile

Hello,

How can I make the images in my "Leadership" page to appear smaller in mobile devices but to remain the same in computer view?

Website: cesarlanga.com

Thank you

@cesarlanga add to Home > Design > Custom CSS

@media screen and (max-width:640px) {
body#collection-5de035815043fe7cebe9685f .sqs-block-image {
    max-width: 50%;
    margin: 0 auto;
}
}