panel-window-list-zoom-hover.css

/* Default size not-selected not-hovered */
.wf-panel .window-button.flat image {
    transition: 500ms linear;
    -gtk-icon-transform: scale(1.0);
}

/* Double size not-selected hovered */
.wf-panel .window-button.flat:hover image {
    transition: 100ms linear;
    -gtk-icon-transform: scale(2.0);
}

/* +50% size selected not-hovered */
.wf-panel .window-button image {
    transition: 100ms linear;
    -gtk-icon-transform: scale(1.5);
}

/* Double size selected hovered */
.wf-panel .window-button:hover image {
    transition: 100ms linear;
    -gtk-icon-transform: scale(2.0);
}