docs: New theme colors, minimized footer, and slight style changes for readability of certain elements (#9250)

* fix anchor

* footer changes

* remove ifm-background-color

* apply pure back and pure white themes

* thematic link colors

* remove search box redesign to commit it separately

* re-add search box redesign

* remove extra blank line

* change heading font size slightly

* basic tab styling

* navbar-box-shadow

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Co-authored-by: Mendon Kissling <59585235+mendonk@users.noreply.github.com>

docs/src/theme/Footer.js

@@ -24,8 +24,8 @@ export default function FooterWrapper(props) {
       onMouseLeave={() => setIsHovered(false)}
       style={{
         position: 'fixed',
-        right: '20px',
-        bottom: '20px',
+        right: '21px',
+        bottom: '21px',
         zIndex: 100,
         display: 'flex',
         alignItems: 'center',