v5: Floating labels (#30449)

* v5: Promote floating labels example to component

- Adds new .form-floating
- Stubs out basics of a docs page
- Removes existing Example

* Update floating labels to support .form-select, make inputs and selects more consistent

- To do this, I made the .form-control and .form-select consistent in min-height vs height
- Removed some unused variables now
- Updated -color to be the -color because I don't know why this was any different before
- Update page to include some examples for layout, validation, and value
- Rewrite styles to not modify padding, but instead transform and opacity

* Streamline and bulletproof some things

- Apply some optimizations from code review
- Removed unecessary properties from the label
- Add some comments for what properties are required
- Move from fixed height for labels to height 100% so we can support textareas
- Improve docs a little bit, add ToC

* Move some values to variables, switch from scaling font-size to scale, update transforms

* Bring over changes from #30966 and add to them to tighten things up

* Delete the now unused example images

* Fix typo

* Allowlist the calc function

* Add transform-origin, update transform values

* Test out autofill fix

* Fix linter issue

* Mention it in the migration guide

* Bump bundlesize

* Add one more variable per review

* Shave .25rem off the height

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

dist/css/bootstrap-utilities.css

@@ -48,6 +48,14 @@
   overflow: hidden !important;
 }
 
+.overflow-visible {
+  overflow: visible !important;
+}
+
+.overflow-scroll {
+  overflow: scroll !important;
+}
+
 .d-inline {
   display: inline !important;
 }
@@ -242,7 +250,7 @@
 }
 
 .border-dark {
-  border-color: #343a40 !important;
+  border-color: #212529 !important;
 }
 
 .border-white {
@@ -899,6 +907,38 @@
   padding-left: 3rem !important;
 }
 
+.fs-1 {
+  font-size: calc(1.375rem + 1.5vw) !important;
+}
+
+.fs-2 {
+  font-size: calc(1.325rem + 0.9vw) !important;
+}
+
+.fs-3 {
+  font-size: calc(1.3rem + 0.6vw) !important;
+}
+
+.fs-4 {
+  font-size: calc(1.275rem + 0.3vw) !important;
+}
+
+.fs-5 {
+  font-size: 1.25rem !important;
+}
+
+.fs-6 {
+  font-size: 1rem !important;
+}
+
+.fst-italic {
+  font-style: italic !important;
+}
+
+.fst-normal {
+  font-style: normal !important;
+}
+
 .font-weight-light {
   font-weight: 300 !important;
 }
@@ -972,7 +1012,7 @@
 }
 
 .text-dark {
-  color: #343a40 !important;
+  color: #212529 !important;
 }
 
 .text-white {
@@ -1044,7 +1084,7 @@
 }
 
 .bg-dark {
-  background-color: #343a40 !important;
+  background-color: #212529 !important;
 }
 
 .bg-body {
@@ -1083,14 +1123,6 @@
   text-decoration: line-through !important;
 }
 
-.font-italic {
-  font-style: italic !important;
-}
-
-.font-normal {
-  font-style: normal !important;
-}
-
 .text-break {
   word-wrap: break-word !important;
   word-break: break-word !important;
@@ -3561,6 +3593,57 @@
   }
 }
 
+@media (min-width: 1200px) {
+  .fs-1 {
+    font-size: 2.5rem !important;
+  }
+  .fs-2 {
+    font-size: 2rem !important;
+  }
+  .fs-3 {
+    font-size: 1.75rem !important;
+  }
+  .fs-4 {
+    font-size: 1.5rem !important;
+  }
+  .fs-sm-1 {
+    font-size: 2.5rem !important;
+  }
+  .fs-sm-2 {
+    font-size: 2rem !important;
+  }
+  .fs-sm-3 {
+    font-size: 1.75rem !important;
+  }
+  .fs-sm-4 {
+    font-size: 1.5rem !important;
+  }
+  .fs-md-1 {
+    font-size: 2.5rem !important;
+  }
+  .fs-md-2 {
+    font-size: 2rem !important;
+  }
+  .fs-md-3 {
+    font-size: 1.75rem !important;
+  }
+  .fs-md-4 {
+    font-size: 1.5rem !important;
+  }
+  .fs-lg-1 {
+    font-size: 2.5rem !important;
+  }
+  .fs-lg-2 {
+    font-size: 2rem !important;
+  }
+  .fs-lg-3 {
+    font-size: 1.75rem !important;
+  }
+  .fs-lg-4 {
+    font-size: 1.5rem !important;
+  }
+}
+
 @media print {
   .d-print-inline {
     display: inline !important;