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Paul BakausandClaude Fable 5
cc8906ecaa
heading-rhythm (quality): a heading binds to the content it introduces, so its rendered space above must exceed its space below. Browser-only: measures real getBoundingClientRect gaps (margin collapsing, flex rows, and section padding make authored margins untrustworthy), merges eyebrow labels into the heading cluster, requires same-column edges, and exempts first-in-container headings, bounded bands, and small cards. Fires only when 2+ headings on a page invert the rhythm. blinking-cursor (slop, advisory): a decorative blinking caret (solid block, underscore bar, or block glyph) bound to an infinite blink animation in the landing region of a page. Real editable surfaces (contenteditable, role=textbox, inputs) are exempt; round pulsing dots stay with the pulsing-dot rule. Verified against eval corpus repros: heading-rhythm fires on the val-a18 observability sample Paul flagged (6 headings, 0px above vs 40px below) and blinking-cursor on the val-a19 hero terminal cursor; 10 other samples across both runs stay clean. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
107 lines
3.7 KiB
HTML
107 lines
3.7 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Blinking cursor fixture</title>
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<style>
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* { margin: 0; padding: 0; box-sizing: border-box; }
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body { font-family: monospace, monospace; font-size: 16px; }
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.hero { padding: 40px; }
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.terminal { background: #111; color: #eee; padding: 24px; width: 600px; }
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@keyframes blink-anim { 50% { opacity: 0; } }
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@keyframes flicker { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
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@keyframes caret-blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
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@keyframes spin { to { transform: rotate(360deg); } }
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/* FLAG: solid block cursor in the hero terminal */
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.flag-block-cursor {
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display: inline-block; width: 10px; height: 18px;
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background: #33d17a; vertical-align: text-bottom;
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animation: blink-anim 1.1s steps(1) infinite;
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}
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/* FLAG: glyph cursor, animation name says nothing but keyframes toggle opacity */
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.flag-glyph-cursor { animation: flicker 1s steps(2) infinite; }
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/* FLAG: underscore bar cursor */
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.flag-underscore-cursor {
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display: inline-block; width: 12px; height: 3px;
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background: #eee; vertical-align: baseline;
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animation: caret-blink 0.9s steps(1) infinite;
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}
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/* PASS: same block cursor shape, but deep below the landing region */
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.pass-below-fold-cursor {
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display: inline-block; width: 10px; height: 18px;
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background: #33d17a;
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animation: blink-anim 1.1s steps(1) infinite;
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}
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/* PASS: cursor inside real editable surfaces */
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.pass-editable-cursor, .pass-textbox-cursor {
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display: inline-block; width: 10px; height: 18px;
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background: #444;
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animation: blink-anim 1s steps(1) infinite;
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}
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/* PASS: round pulsing dot stays with the pulsing-dot rule */
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.pass-round-dot {
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display: inline-block; width: 8px; height: 8px;
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background: #33d17a; border-radius: 50%;
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animation: blink-anim 2s steps(1) infinite;
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}
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/* PASS: spinner animates transform, not visibility */
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.pass-spinner {
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display: inline-block; width: 16px; height: 16px;
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border: 2px solid #999; border-top-color: #333; border-radius: 50%;
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animation: spin 1s linear infinite;
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}
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/* PASS: a blinking word is not a cursor shape */
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.pass-blinking-word { animation: flicker 1s steps(2) infinite; }
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/* PASS: large blinking panel fails the caret-size gates */
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.pass-blinking-panel {
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display: inline-block; width: 200px; height: 90px;
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background: #222;
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animation: blink-anim 2s steps(1) infinite;
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}
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.spacer { height: 1400px; }
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</style>
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</head>
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<body>
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<div class="hero">
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<h1>Terminal-flavored landing hero</h1>
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<div class="terminal">
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<p>user@host:~$ run demo <span class="flag-block-cursor" aria-hidden="true"></span></p>
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<p>user@host:~$ tail -f logs <span class="flag-glyph-cursor" aria-hidden="true">▌</span></p>
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<p>user@host:~$ next up <span class="flag-underscore-cursor" aria-hidden="true"></span></p>
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</div>
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<p style="margin-top: 24px;">Status <span class="pass-round-dot" aria-hidden="true"></span>
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loading <span class="pass-spinner" aria-hidden="true"></span>
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and a <span class="pass-blinking-word">LIVE</span> badge word
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plus a big panel <span class="pass-blinking-panel" aria-hidden="true"></span></p>
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<div contenteditable="true" class="terminal" style="margin-top: 24px;">
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<p>editable prompt <span class="pass-editable-cursor" aria-hidden="true"></span></p>
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</div>
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<div role="textbox" class="terminal" style="margin-top: 24px;">
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<p>textbox prompt <span class="pass-textbox-cursor" aria-hidden="true"></span></p>
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</div>
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</div>
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<div class="spacer"></div>
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<div class="terminal">
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<p>deep footer terminal <span class="pass-below-fold-cursor" aria-hidden="true"></span></p>
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</div>
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</body>
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</html>
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