dots/usr/share/themes/Dracula/gtk-3.0/widgets/content-view.css

/****************
 * content view *
 ****************/
.content-view.view {
    background-color: @theme_base_color;
}

.content-view.view:prelight {
    background-color: alpha(@theme_selected_bg_color, 0.6);
}

.content-view.view:selected,
.content-view.view:active {
    background-color: @theme_selected_bg_color;
}

.content-view.view:insensitive {
    background-color: shade(@theme_base_color, 0.9);
}

GdMainIconView.content-view {
    -GdMainIconView-icon-size: 40;
}

GtkIconView.content-view.check {
    background-color: transparent;
}

GtkIconView.content-view.check:active {
    background-color: transparent;
}

.content-view.view.check,
.content-view.view.check:active {
    background-color: transparent;
}

GtkIconView.content-view.check:prelight,
GtkIconView.content-view.check:insensitive,
GtkIconView.content-view.check:selected {
    background-color: transparent;
}