Center the login card vertically on Keycloak 11 - #483
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PatternFly 3 anchors the login page to the top of the viewport with fixed padding, so the card sat in the upper third of the screen. Make the page a min-height:100vh flex column and centre the card with auto margins, which degrade to normal scrolling on viewports shorter than the card instead of clipping its top edge. Keycloak 26 already centres via PatternFly 5's login grid, so kc26.css is untouched. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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On Keycloak 11 (what prod runs), the login card sat pinned to the top of the viewport with a large empty area below it; it is now vertically centered, matching what Keycloak 26 already does via PatternFly 5's login grid. PatternFly 3 top-anchors
.login-pf-pagewith fixed padding, so the page becomes amin-height: 100vhflex column and the card centers with auto margins rather thanjustify-content: center— auto margins collapse on viewports shorter than the card, so the page scrolls normally instead of clipping the card's top edge. The card also getswidth: 100%(capped by the existing 400px max-width) so sparse pages like the error page keep full card width now that flex sizing applies, and the phone breakpoint keeps its 16px gutters while preserving the vertical centering.Validated with the theme dev harness (
keycloak/compose.theme-dev.yml) andkeycloak/tests/screenshot.shon both KC 11 and KC 26: desktop login, mobile login, invalid-credentials, and both error pages all render centered with no clipping, andcheck-css.shandsmoke.shpass on both versions.🤖 Generated with Claude Code