GTK3: improve entry visibility

share/themes/Kali-Dark/gtk-3.0/gtk.css

@@ -4770,6 +4770,9 @@ popover.emoji-completion .emoji:hover {
   * button, * button:hover, * button:active, * button:checked, * button:focus {
     outline-color: alpha(currentColor,0.07); }
 
+/**********
+ * Button *
+ **********/
 .titlebar stackswitcher button:checked:checked,
 .titlebar button.toggle:active,
 .titlebar button.toggle:checked,
@@ -4782,6 +4785,17 @@ button:checked {
   background: #1b1d24;
   box-shadow: inset 0 3px 5px -4px rgba(0, 0, 0, 0.3); }
 
+/**********
+ * Entry *
+ **********/
+spinbutton:not(.vertical),
+entry {
+  box-shadow: inset 0 3px 5px -4px rgba(0, 0, 0, 0.3);
+  background-color: #1b1d24; }
+
+/**********
+ * Slider *
+ **********/
 scale slider:active, switch:hover slider {
   background-image: image(#0f1014); }