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

.selection-mode.titlebar .titlebutton.minimize,
.titlebar .titlebutton.minimize {
    color: transparent;
    border:none;
    box-shadow: none;
    background-position: center;
    background-repeat: no-repeat;
    background-image: -gtk-scaled(url("../assets/min.svg"));
}

.selection-mode.titlebar .titlebutton.minimize:backdrop,
.titlebar .titlebutton.minimize:backdrop {
    background-image: -gtk-scaled(url("../assets/min_unfocused.png"));
    color: transparent;
}

.selection-mode.titlebar .titlebutton.minimize:hover,
.selection-mode.titlebar .titlebutton.minimize:active,
.selection-mode.titlebar .titlebutton.minimize:checked,
.titlebar .titlebutton.minimize:hover,
.titlebar .titlebutton.minimize:active,
.titlebar .titlebutton.minimize:checked {
    color: transparent;
    border: none;
    box-shadow: none;
    background-color: transparent;
    background-position: center;
    background-repeat: no-repeat;
    background-image: -gtk-scaled(url("../assets/min_prelight.svg"));
}

.selection-mode.titlebar .titlebutton.maximize,
.titlebar .titlebutton.maximize {
   color: transparent;
    border: none;
    box-shadow: none;
    background-position: center;
    background-repeat: no-repeat;
    background-image: -gtk-scaled(url("../assets/maximize.svg"));
}

.selection-mode.titlebar .titlebutton.maximize:backdrop,
.titlebar .titlebutton.maximize:backdrop {
    background-image: -gtk-scaled(url("../assets/maximize_unfocused.png"));
    color: transparent;
}

.selection-mode.titlebar .titlebutton.maximize:hover,
.selection-mode.titlebar .titlebutton.maximize:active,
.selection-mode.titlebar .titlebutton.maximize:checked,
.titlebar .titlebutton.maximize:hover,
.titlebar .titlebutton.maximize:active,
.titlebar .titlebutton.maximize:checked  {
    color: transparent;
    border: none;
    box-shadow: none;
    background-color: transparent;
    background-position: center;
    background-repeat: no-repeat;
    background-image: -gtk-scaled(url("../assets/maximize_prelight.svg"));
}

.selection-mode.titlebar .titlebutton.close,
.titlebar .titlebutton.close {
   color: transparent;
    border: none;
    box-shadow: none;
    background-position: center;
    background-repeat: no-repeat;
    background-image: -gtk-scaled(url("../assets/close.svg"));
}

.selection-mode.titlebar .titlebutton.close:backdrop,
.titlebar .titlebutton.close:backdrop {
    background-image: -gtk-scaled(url("../assets/close_unfocused.png"));
    color: transparent;
}

.selection-mode.titlebar .titlebutton.close:hover,
.selection-mode.titlebar .titlebutton.close:active,
.selection-mode.titlebar .titlebutton.close:checked,
.titlebar .titlebutton.close:hover,
.titlebar .titlebutton.close:active,
.titlebar .titlebutton.close:checked  {
   color: transparent;
    border: none;
    box-shadow: none;
    background-color: transparent;
    background-position: center;
    background-repeat: no-repeat;
    background-image: -gtk-scaled(url("../assets/close_prelight.svg"));
}

/*******************
 * check and radio *
 *******************/
/* draw regular check and radio items using our assets */

.check,
.check:focus {
    -gtk-icon-source: -gtk-scaled(url("../assets/checkbox-unchecked.png"),url("../assets/checkbox-unchecked@2.png"));
}

.check:hover {
    -gtk-icon-source: -gtk-scaled(url("../assets/checkbox-unchecked-hover.png"),url("../assets/checkbox-unchecked-hover@2.png"));
}

.check:insensitive,
.check row:selected:insensitive,
.check row:selected:focus:insensitive {
    -gtk-icon-source: -gtk-scaled(url("../assets/checkbox-unchecked-insensitive.png"),url("../assets/checkbox-unchecked-insensitive@2.png"));
}

.check:active,
.check:checked,
.check row:selected:active,
.check row:selected:focus:active {
    -gtk-icon-source: -gtk-scaled(url("../assets/checkbox-checked.png"),url("../assets/checkbox-checked@2.svg"));
}

.check:active:insensitive,
.check:checked:insensitive,
.check row:selected:active:insensitive,
.check row:selected:focus:active:insensitive {
    -gtk-icon-source: -gtk-scaled(url("../assets/checkbox-checked-insensitive.png"),url("../assets/checkbox-checked-insensitive@2.png"));
}

.check:inconsistent,
.check row:selected:inconsistent,
.check row:selected:focus:inconsistent {
    -gtk-icon-source: -gtk-scaled(url("../assets/checkbox-mixed.png"),url("../assets/checkbox-mixed@2.png"));
}

.check:inconsistent:insensitive,
.check row:selected:inconsistent:insensitive,
.check row:selected:focus:inconsistent:insensitive {
    -gtk-icon-source: -gtk-scaled(url("../assets/checkbox-mixed-insensitive.png"),url("../assets/checkbox-mixed-insensitive@2.png"));
}

.radio,
.radio:hover,
.radio row:selected,
.radio row:selected:focus {
    -gtk-icon-source: -gtk-scaled(url("../assets/radio-unchecked.png"),url("../assets/radio-unselected@2.png"));
}

.radio:insensitive,
.radio row:selected:insensitive,
.radio row:selected:focus:insensitive {
    -gtk-icon-source: -gtk-scaled(url("../assets/radio-unchecked-insensitive.png"),url("../assets/radio-unselected-insensitive@2.png"));
}

.radio:active,
.radio:active:hover,
.radio:checked,
.radio row:selected:active,
.radio row:selected:focus:active {
    -gtk-icon-source: -gtk-scaled(url("../assets/radio-checked.png"),url("../assets/radio-selected@2.png"));
}

.radio:active:insensitive,
.radio:checked:insensitive,
.radio row:selected:active:insensitive,
.radio row:selected:focus:active:insensitive {
    -gtk-icon-source: -gtk-scaled(url("../assets/radio-checked-insensitive.png"),url("../assets/radio-selected-insensitive@2.png"));
}

.radio:inconsistent,
.radio row:selected:inconsistent,
.radio row:selected:focus:inconsistent {
    -gtk-icon-source: -gtk-scaled(url("../assets/radio-mixed.png"),url("../assets/radio-mixed@2.png"));
}

.radio:inconsistent:insensitive,
.radio row:selected:inconsistent:insensitive,
.radio row:selected:focus:inconsistent:insensitive {
    -gtk-icon-source: -gtk-scaled(url("../assets/radio-mixed-insensitive.png"),url("../assets/radio-mixed-insensitive@2.png"));
}

.menuitem.check {
    -gtk-icon-source: none;
}

.menuitem.check:active,
.menuitem.check:checked {
    -gtk-icon-source: -gtk-scaled(url("../assets/menuitem-checkbox-checked.png"),url("../assets/menuitem-checkbox-checked@2.png"));
}

.menuitem.check:active:hover,
.menuitem.check:checked:hover {
    -gtk-icon-source: -gtk-scaled(url("../assets/menuitem-checkbox-checked-hover.png"),url("../assets/menuitem-checkbox-checked-hover@2.png"));
}

.menuitem.check:active:insensitive,
.menuitem.check:checked:insensitive {
    -gtk-icon-source: -gtk-scaled(url("../assets/menuitem-checkbox-checked-insensitive.png"),url("../assets/menuitem-checkbox-checked-insensitive@2.png"));
}

.menuitem.check:inconsistent,
.menuitem.radio:inconsistent {
    -gtk-icon-source: -gtk-scaled(url("../assets/menuitem-checkbox-mixed.png"),url("../assets/menuitem-checkbox-mixed@2.png"));
}

.menuitem.check:inconsistent:insensitive,
.menuitem.radio:inconsistent:insensitive {
    -gtk-icon-source: -gtk-scaled(url("../assets/menuitem-checkbox-mixed-insensitive.png"),url("../assets/menuitem-checkbox-mixed-insensitive@2.png"));
}

.menuitem.radio {
    -gtk-icon-source: none;
}

.menuitem.radio:active,
.menuitem.radio:checked {
    -gtk-icon-source: -gtk-scaled(url("../assets/menuitem-radio-checked.png"),url("../assets/menuitem-radio-checked@2.png"));
}

.menuitem.radio:active:hover,
.menuitem.radio:checked:hover {
    -gtk-icon-source: -gtk-scaled(url("../assets/menuitem-radio-checked-hover.png"),url("../assets/menuitem-radio-checked-hover@2.png"));
}

.menuitem.radio:active:insensitive,
.menuitem.radio:checked:insensitive {
    -gtk-icon-source: -gtk-scaled(url("../assets/menuitem-radio-checked-insensitive.png"),url("../assets/menuitem-radio-checked-insensitive@2.png"));
}

GtkIconView.content-view.cell.check {
    -gtk-icon-source: -gtk-scaled(url("../assets/grid-selection-unchecked.png"),url("../assets/grid-selection-unchecked@2.png"));
}

GtkIconView.content-view.cell.check:checked {
    -gtk-icon-source: -gtk-scaled(url("../assets/grid-selection-checked.svg"),url("../assets/grid-selection-checked@2.svg"));
}

/******************
 * pane separator *
 ******************/
.pane-separator.horizontal {
    background-image: -gtk-scaled(url("../assets/pane-handle.png"),url("../assets/pane-handle@2.png"));
    background-repeat: no-repeat;
    background-position: center center;
}

.pane-separator.vertical {
    background-image: -gtk-scaled(url("../assets/pane-handle-vertical.png"),url("../assets/pane-handle-vertical@2.png"));
    background-repeat: no-repeat;
    background-position: center center;
}

/*************
 * GtkSwitch *
 *************/
GtkSwitch.trough {
    background-image: -gtk-scaled(url("../assets/switch-off.svg"),url("../assets/switch-off@2.svg"));
}

GtkSwitch.trough:active {
    background-image: -gtk-scaled(url("../assets/switch-on.svg"),url("../assets/switch-on@2.svg"));
}

GtkSwitch.trough:insensitive,
GtkSwitch.trough:active:insensitive {
    background-image: -gtk-scaled(url("../assets/switch-insensitive.svg"),url("../assets/switch-insensitive@2.svg"));
}

GtkSwitch.slider {
    background-image: -gtk-scaled(url("../assets/switch-slider-off.svg"),url("../assets/switch-slider-off@2.svg"));
}

GtkSwitch.slider:active {
    background-image: -gtk-scaled(url("../assets/switch-slider-on.svg"),url("../assets/switch-slider-on@2.svg"));
}

GtkSwitch.slider:insensitive,
GtkSwitch.slider:active:insensitive {
    background-image: -gtk-scaled(url("../assets/switch-slider-insensitive.svg"),url("../assets/switch-slider-insensitive@2.svg"));
}

/*******************
 * GtkScale slider *
 *******************/
.scale.slider {
    background: -gtk-scaled(url("../assets/scale-slider.svg"),url("../assets/scale-slider@2.png"));
}

.scale.slider:hover {
    background: -gtk-scaled(url("../assets/scale-slider-hover.svg"),url("../assets/scale-slider-hover@2.png"));
}

.scale.slider:insensitive {
    background: -gtk-scaled(url("../assets/scale-slider-insensitive.png"),url("../assets/scale-slider-insensitive@2.png"));
}