.btn.show {\n  color: var(--bs-btn-active-color);\n  background-color: var(--bs-btn-active-bg);\n  border-color: var(--bs-btn-active-border-color);\n}\n.btn-check:checked + .btn:focus-visible, :not(.btn-check) + .btn:active:focus-visible, .btn:first-child:active:focus-visible, .btn.active:focus-visible, .btn.show:focus-visible {\n  box-shadow: var(--bs-btn-focus-box-shadow);\n}\n.btn:disabled, .btn.disabled, fieldset:disabled .btn {\n  color: var(--bs-btn-disabled-color);\n  pointer-events: none;\n  background-color:...

See https://developer.mozilla.org/en-US/docs/Web/CSS/:focus-visible\n// and https://developer.paciellogroup.com/blog/2018/03/focus-visible-and-backwards-compatibility/\n[tabindex=\"-1\"]:focus:not(:focus-visible) {\n  outline: 0 !important;\n}\n\n\n// Content grouping\n//\n// 1. Add the correct box sizing in Firefox.\n// 2. Show the overflow in Edge and IE.\n\nhr {\n  box-sizing: content-box; // 1\n  height: 0; // 1\n  overflow: visible; // 2\n}\n\n\n//\n// Typography\n//\n\n// Remove top margins...

### Deprecation warnings

SIG API Machinery implemented [warnings when using deprecated APIs](https://kubernetes.io/docs/reference/using-api/deprecation-policy/#rest-resources-aka-api-objects)
that are visible to `kubectl` users and API consumers, and metrics visible to cluster administrators.
Requests to a deprecated API are returned with a warning containing a target removal release and any replacement API.

2A0C          ; mapped                 ; 222B 222B 222B 222B #3.2 QUADRUPLE INTEGRAL OPERATOR
2A0D..2A73    ; valid                  ;      ; NV8    # 3.2  FINITE PART INTEGRAL..EQUALS SIGN ABOVE TILDE OPERATOR
2A74          ; disallowed_STD3_mapped ; 003A 003A 003D #3.2  DOUBLE COLON EQUAL
2A75          ; disallowed_STD3_mapped ; 003D 003D     # 3.2  TWO CONSECUTIVE EQUALS SIGNS

### Refactors

* ♻️ Upgrade internal syntax to Python 3.9+ 🎉. PR [#14564](https://github.com/fastapi/fastapi/pull/14564) by [@tiangolo](https://github.com/tiangolo).

### Docs