refactor: move basic style sets from core to base (#223)

Author: annsch

scss/_init.scss

@@ -1,10 +1,60 @@
 @use "variables" as *;
 
 :root {
+// Todo: probably move these to the tokens as well
 	--db-focus-outline-offset: 1px;
 	--db-focus-outline-color: #{$db-colors-information-enabled};
 	--db-focus-outline-transition-duration: #{$db-transition-duration-ultra-fast};
 	--db-focus-outline-size: max(2px, 0.08em);
+
+	--db-disabled-text-opacity: 0.5;
+}
+
+// *! this is an opionionated (especially based on "enhancing" normalize.css) version of minireset.css v0.0.4 | MIT License | github.com/jgthms/minireset.css
+html,
+body {
+	margin: 0;
+	padding: 0;
+}
+
+// Box sizing
+html {
+	box-sizing: border-box;
+}
+
+// Make sure every elements has the current color from container above
+body {
+	color: var(--db-current-color, $db-colors-neutral-on-bg-enabled);
+	min-height: 100vh;
+}
+
+a {
+	color: inherit;
+
+	strong {
+		color: currentColor;
+	}
+}
+
+*,
+::before,
+::after {
+	box-sizing: inherit;
+}
+
+// Media
+img,
+embed,
+iframe,
+object,
+video {
+	height: auto;
+	max-width: 100%;
+}
+
+// Iframe
+iframe {
+	border: 0;
 }
 
 // Focus styles
@@ -23,11 +73,29 @@
 	}
 }
 
-// Make sure every elements has the current color from container above
-body {
-	color: var(--db-current-color, $db-colors-neutral-on-bg-enabled);
+// List style / https://marketingportal.extranet.deutschebahn.com/de/brandguide/typografie-1#8e0be060-c2f5-42a1-abbc-6b050845d73c~paragraph--image_link
+:where(ul) {
+	list-style-type: "\2022"+ "   ";
+
+	li::marker {
+		color: #{$db-colors-primary-enabled};
+	}
 }
 
-a {
-	color: inherit;
+// * Individual styles
+// Navigation lists
+nav,
+[role="navigation"] {
+	ol,
+	ul {
+		list-style: none;
+
+		margin: 0;
+		padding: 0;
+	}
+}
+
+// Block
+fieldset {
+	border: none;
 }