2nd/10_Wiki/Dev/Topic_CSS/CSS_Animations_Timing.md

id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit

id	title	category	status	verification_status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	created_at	updated_at	review_reason	merge_history	tags	raw_sources	applied_in	github_commit
css-animation-timing	CSS Animation Timing	Frontend	draft	conceptual		animation-delay animation-iteration-count animation-timing-function infinite animation negative delay animation speed curve		B	0.88	2026-06-23	2026-06-23			css web frontend w3schools animation timing-function iteration	https://www.w3schools.com/css/css3_animations_timing.asp

CSS Animation Timing

🎯 한 줄 통찰 (One-line insight)

Animation timing controls when and how often an animation runs: animation-delay postpones (and, when negative, fast-forwards) the start, animation-iteration-count sets how many times it repeats (including infinite), and animation-timing-function sets the speed curve. [S1]

🧠 핵심 개념 (Core concepts)

• animation-delay — specifies a delay for the start of an animation; negative values make the animation start as if it had already been playing for that many seconds. [S1]
• animation-iteration-count — specifies the number of times an animation should run; accepts a number or the keyword infinite. [S1]
• animation-timing-function — specifies the speed curve of the animation. [S1]

🧩 추출된 패턴 (Extracted patterns)

• Negative delay = head start — a negative animation-delay begins partway through the animation. [S1]
• Loop forever — animation-iteration-count: infinite; repeats the animation endlessly. [S1]
• Speed-curve selection — same value set as transitions: ease (default), linear, ease-in, ease-out, ease-in-out, cubic-bezier(n,n,n,n). [S1]

📖 세부 내용 (Details)

Delay an Animation The animation-delay property specifies a delay for the start of an animation. The following example has a 2 seconds delay before starting the animation: [S1]

div {
  width: 100px;
  height: 100px;
  position: relative;
  background-color: red;
  animation-name: myAnimation;
  animation-duration: 4s;
  animation-delay: 2s;
}

Negative values are also allowed. If using negative values, the animation will start as if it had already been playing for N seconds. In the following example, the animation will start as if it had already been playing for 2 seconds: [S1]

div {
  width: 100px;
  height: 100px;
  position: relative;
  background-color: red;
  animation-name: myAnimation;
  animation-duration: 4s;
  animation-delay: -2s;
}

Set How Many Times an Animation Should Run The animation-iteration-count property specifies the number of times an animation should run. The following example will run the animation 3 times before it stops: [S1]

div {
  animation-iteration-count: 3;
}

The following example uses the value "infinite" to make the animation continue for ever: [S1]

div {
  animation-iteration-count: infinite;
}

Specify the Speed Curve of the Animation The animation-timing-function property specifies the speed curve of the animation. The animation-timing-function property can have the following values: [S1]

• ease — specifies an animation with a slow start, then fast, then end slowly (this is default). [S1]
• linear — specifies an animation with the same speed from start to end. [S1]
• ease-in — specifies an animation with a slow start. [S1]
• ease-out — specifies an animation with a slow end. [S1]
• ease-in-out — specifies an animation with a slow start and end. [S1]
• cubic-bezier(n,n,n,n) — lets you define your own values in a cubic-bezier function. [S1]

The following example shows the different speed curves that can be used: [S1]

#div1 {animation-timing-function: linear;}
#div2 {animation-timing-function: ease;}
#div3 {animation-timing-function: ease-in;}
#div4 {animation-timing-function: ease-out;}
#div5 {animation-timing-function: ease-in-out;}

🛠️ 적용 사례 (Applied in summary)

The page applies a 2-second positive delay and a -2-second negative delay to a <div>, runs an animation 3 times and then infinitely via animation-iteration-count, and demonstrates the five named speed curves across #div1–#div5. No external project/commit applications found in the source.

💻 코드 패턴 (Code patterns)

Delay and iteration count (language: CSS):

div {
  animation-name: myAnimation;
  animation-duration: 4s;
  animation-delay: 2s;
  animation-iteration-count: infinite;
}

Speed curve:

#div1 {animation-timing-function: linear;}
#div2 {animation-timing-function: ease;}

⚖️ 비교 및 선택 기준 (Comparison & decision criteria)

The animation-timing-function values offer the same trade-offs as in transitions: linear holds a constant speed; ease (default) accelerates then decelerates; ease-in/ease-out slow only the start or end; ease-in-out slows both ends; and cubic-bezier(n,n,n,n) defines a custom curve. For animation-iteration-count, choose a finite number for a bounded effect or infinite for continuous loops (e.g. spinners). [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

No contradictions found in the source.

✅ 검증 상태 및 신뢰도

• 상태: draft
• 검증 단계: conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
• 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
• 신뢰 점수: 0.88
• 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

• 상위/루트: CSS Tutorial
• 관련 개념: CSS Animations, CSS Animation Properties, CSS Transition Timing
• 참조 맥락: Adds delay, repeat, and speed-curve control on top of the basic @keyframes animation.

📚 출처 (Sources)

• [S1] W3Schools — CSS Animation Timing — https://www.w3schools.com/css/css3_animations_timing.asp

📝 변경 이력 (Change history)

• 2026-06-23: Initial draft synthesized from the W3Schools "CSS Animation Timing" page (Astra wiki-curation, P-Reinforce v3.1 format).