Changing height of products in category view

Try

@media screen and (max-width: 979px){
.normal_image{
top:-100px;
}
}

@media screen and (max-width: 675px){
DIV.product_details_box > *,
DIV.product_details_box > * > *{
width:100%!important;
padding:0!important;
}
}

That worked great. Thanks!