Add v5.0.0-beta3 docs (#33440)

docs/5.0/dist/css/bootstrap-reboot.rtl.css

@@ -1,5 +1,5 @@
 /*!
- * Bootstrap Reboot v5.0.0-beta2 (https://getbootstrap.com/)
+ * Bootstrap Reboot v5.0.0-beta3 (https://getbootstrap.com/)
  * Copyright 2011-2021 The Bootstrap Authors
  * Copyright 2011-2021 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
@@ -29,10 +29,6 @@ body {
   -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
 }
 
-[tabindex="-1"]:focus:not(:focus-visible) {
-  outline: 0 !important;
-}
-
 hr {
   margin: 1rem 0;
   color: inherit;
@@ -103,7 +99,6 @@ p {
 
 abbr[title],
 abbr[data-bs-original-title] {
-  text-decoration: underline;
   -webkit-text-decoration: underline dotted;
   text-decoration: underline dotted;
   cursor: help;
@@ -309,6 +304,9 @@ select {
 select {
   word-wrap: normal;
 }
+select:disabled {
+  opacity: 1;
+}
 
 [list]::-webkit-calendar-picker-indicator {
   display: none;