chore(docs): update theme colours, remove unneeded style declarations

Author: grega

packages/docs/src/css/custom.css

@@ -9,12 +9,12 @@
 /* You can override the default Infima variables here. */
 :root {
   --ifm-color-primary: #4285F4;
-  --ifm-color-primary-dark: #29784c;
-  --ifm-color-primary-darker: #277148;
-  --ifm-color-primary-darkest: #205d3b;
-  --ifm-color-primary-light: #33925d;
-  --ifm-color-primary-lighter: #359962;
-  --ifm-color-primary-lightest: #3cad6e;
+  --ifm-color-primary-dark: #2b77f3;
+  --ifm-color-primary-darker: #1d6df2;
+  --ifm-color-primary-darkest: #0b56d4;
+  --ifm-color-primary-light: #5993f5;
+  --ifm-color-primary-lighter: #67a0f6;
+  --ifm-color-primary-lightest: #91bbf9;
   --ifm-code-font-size: 95%;
   --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.1);
 
@@ -93,18 +93,6 @@
   --ifm-alert-border-color: #4285F4;
 }
 
-.expandButton_TmdG{
-  align-items: end !important;
-}
-
-.expandButtonIcon_i1dp{
-  margin-bottom: 10px;
-}
-
-.collapseSidebarButton_PEFL{
-      text-align: right !important
-}
-
 .DocSearch-Button-Keys{
   min-width: 0px !important;
 }
@@ -263,15 +251,6 @@
   display: none !important;
 }
 
-.Last_Updated_Date{
- color: #70757A;
- font-size: 0.875rem;
- font-weight: 400;
- font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
- margin: 0;
- text-align: right;
-}
-
 .DocSearch-Button-Keys .DocSearch-Button-Key {
   display: none !important;
 }