feat: Change styles and ui

- Change to hippie styles
- Remove unused styles and components
- Change colors for ui pages

source/style/ui.scss

@@ -1,11 +1,10 @@
 @use "sass:map";
 
-$color_text_basic: white;
-$color_head_basic: white;
-
 @import "demo_config";
 @import "hippie-style/hippie";
 
+$color_gui_back: $color_dark;
+
 .op_show {
 	transition: $transition_show;
 }
@@ -20,12 +19,12 @@ $color_head_basic: white;
 	body {
 		position: relative;
 		min-height: 100%;
-		background-color: black;
 	}
 }
 
 .body_ui {
 	height: 100vh;
+	background-color: $color_gui_back;
 }
 
 .step {