Yadda CSS keyframe animations ke aiki?

Question

Accepted Answer

Yayin da masu faushi suna yin animation *tsakanin jihe biyu*, animations **`@keyframes`** suna bayyana jerin matakai da yawa wanda zai iya gudu ta atomatik, ying madauki, da wucewa ta jihohe masu cewa-cewa da yawa.

## Bayyana da amfani da animation

```css
@keyframes slide-in {
  from { transform: translateX(-100%); opacity: 0; } /* 0% */
  to   { transform: translateX(0);     opacity: 1; } /* 100% */
}

.panel {
  animation: slide-in 0.5s ease-out;
}
```

## Keyframes matakai da yawa tare da alamomi

```css
@keyframes bounce {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(-30px); } /* peak of the bounce */
  100% { transform: translateY(0); }
}
```

Alamomi suna ba ka damar shirya matakai da yawa a cikin animation guda — ba zai yiwu tare da faushi mai sauƙi.

## Gajerun gajerun animation gaba

```css
.spinner {
  animation: spin 1s linear infinite;
  /*         │    │    │      └── iteration-count (infinite = loop forever) */
  /*         │    │    └───────── timing function */
  /*         │    └────────────── duration */
  /*         └─────────────────── @keyframes name */
}
@keyframes spin { to { transform: rotate(360deg); } } /* classic loading spinner */
```

Wasu kadarori: `animation-delay`, `animation-direction: alternate` (ping-pong), `animation-fill-mode: forwards` (riƙe da jihe na ƙarshewa), `animation-play-state: paused`.

## Aiki — animate transform/opacity kawai

```css
/* ✅ GPU-composited, 60fps */
@keyframes good { to { transform: scale(1.1); opacity: 0.5; } }
/* ❌ animating width/height/top forces layout every frame → jank */
@keyframes bad  { to { width: 300px; top: 50px; } }
```

Animations keyframe suna gudu a kowane frame, don haka yunin kadarori na yin animation yana zama mai tsada fiye da yunin `transform`/`opacity`.

## Accessibility

```css
@media (prefers-reduced-motion: reduce) {
  .spinner { animation: none; } /* honor users sensitive to motion */
}
```

## Me ya sa ya zama mahimmanci

Keyframe animations suna bugi loaders, sigogi na kula, shigar, da tasirin madauki waɗanda maɗufu suna rasa kwarai (matakai-da-yawa, jiya ta atomatik, marás iyaka).

Sanin gajerun, tsaya wajen `transform`/`opacity` don dadi, da kula da `prefers-reduced-motion` suna ba ka damar gina motsi mai sabbin gida wanda ya tsaya aiki da samari.