Zoom Hover

Depending on the template used, you'll need to edit the class the hover affects are applied to.

For newer (2016) index gallery templates, use something like this (Examples: http://www.eu-tech.biz/):

// Ease transition on hover animation
.Index-gallery-item-image img {
  transition: all .7s ease-in-out!important; 
}

// Makes Image Zoom on Hover
.Index-gallery-item:hover img {
    -webkit-transform: scale(1.2);
    -moz-transform: scale(1.2);
    -ms-transform: scale(1.2);
    transform: scale(1.2);
    -webkit-transition: -webkit-transform 1s ease;
    -webkit-transition: transform 1s ease;
    -moz-transition: transform 1s ease;
    transition: transform 1s ease;
}

For older index gallery templates, use (Examples: http://www.bhochevar.com/media-1/):

// Ease transition on hover animation
.slide img {
  transition: all .7s ease-in-out; 
}

// Makes Image Zoom on Hover
.slide-wrapper:hover img {
    -webkit-transform: scale(1.2);
    -moz-transform: scale(1.2);
    -ms-transform: scale(1.2);
    transform: scale(1.2);
    -webkit-transition: -webkit-transform 1s ease;
    -webkit-transition: transform 1s ease;
    -moz-transition: transform 1s ease;
    transition: transform 1s ease;
}