CSS Animations with Keyframes

 CSS animations with keyframes allow you to create complex and custom animations directly in CSS. Keyframes define the stages and styles of the animation, specifying how an element should change over time. Here's a step-by-step guide on how to create CSS animations with keyframes:

1. Define Keyframes:

Keyframes are defined using the @keyframes rule followed by a name that identifies the animation. Inside the @keyframes rule, you specify the styles at various stages of the animation using percentage values (from 0% to 100%). For example:

@keyframes slidein { 0% { transform: translateX(-100%); } 100% { transform: translateX(0); } }

In this example, the slidein animation moves an element from left to right by translating it along the x-axis.

2. Apply Animation to Elements:

Once you've defined your keyframes, you can apply the animation to elements using the animation property. Specify the name of the animation, duration, timing function, delay, and iteration count as values of the animation property. For example:

.element { animation: slidein 1s ease-out 0s 1 normal forwards; }

• slidein: Name of the keyframes animation.
• 1s: Duration of the animation (1 second).
• ease-out: Timing function (animation decelerates as it progresses).
• 0s: Delay before the animation starts (0 seconds).
• 1: Iteration count (number of times the animation should repeat).
• normal: Direction of the animation (forwards, meaning the element retains its styles from the end of the animation).

3. Additional Animation Properties:

You can further customize your animations using additional animation properties:

• animation-fill-mode: Specifies how styles are applied before and after the animation. Values include none, forwards, backwards, and both.
• animation-direction: Specifies whether the animation should play forwards, backwards, alternate, or alternate-reverse.
• animation-play-state: Controls whether the animation is running or paused.
• animation-delay: Specifies a delay before the animation starts.
• animation-iteration-count: Specifies the number of times the animation should repeat.
• animation-timing-function: Specifies the speed curve of the animation.
• animation-name: Specifies the name of the keyframes animation.

Example:

Here's a complete example demonstrating a simple CSS animation with keyframes:

@keyframes slidein { 0% { transform: translateX(-100%); } 100% { transform: translateX(0); } } .element { width: 100px; height: 100px; background-color: blue; animation: slidein 1s ease-out 0s 1 normal forwards; }

In this example, an element with the class .element will slide in from the left over the course of 1 second when the page loads.

Experiment with different keyframe definitions and animation properties to create a wide range of animations, from simple transitions to more complex effects.