Add black and white themes

svelte/src/home_page/HomePage.svelte

@@ -11,9 +11,6 @@ let upload_widget
 </script>
 
 <header class="logo_header">
-	<div class="menu_button_container">
-		<Menu no_login_label="Not logged in" hide_name={false} hide_logo style="border-radius: 0 0 0 8px; margin: 0"/>
-	</div>
 	<div class="header_image_container"></div>
 </header>
 
@@ -139,15 +136,14 @@ header {
 }
 header > h1 {
 	color: #ffffff;
-	text-shadow: 0 0 6px #000000;
+	text-shadow: 1px 1px 5px #000000;
 	margin-top: 30px;
 	margin-bottom: 30px;
 }
 
 .header_image_container {
 	text-align: initial;
-	margin: auto;
-	margin-bottom: 50px;
+	margin: 50px auto;
 	height: 100px;
 	width: 500px;
 	max-width: 100%;
@@ -156,10 +152,6 @@ header > h1 {
 	background-size: contain;
 	background-position: center;
 }
-.menu_button_container {
-	display: flex;
-	justify-content: end;
-}
 .image {
 	max-width: 100%;
 	border-radius: 12px;
@@ -167,7 +159,6 @@ header > h1 {
 .bold {
 	font-weight: bold;
 	color: var(--highlight_color);
-	text-shadow: 1px 1px 3px var(--shadow_color);
 }
 
 .prices {