The @keyframes rule in CSS is used to define the behavior of an animation over a specified range of keyframes or waypoints. It allows you to create more complex and customized animations than simple transitions. Here are the key reasons why the @keyframes rule is used in CSS animations:

Syntax:

@keyframes animation-name {
    keyframes-selector {
        css-styles;
    }
}

Define Animation Steps:

• @keyframes defines animation steps or keyframes.
• Styles at different points determine the element’s appearance during each stage.

Control Animation Timing:

• You have precise control over the timing of each keyframe, allowing you to create animations with specific durations and delays.
• This control is useful for achieving effects like pauses, slow starts, and smooth transitions between keyframes.

Create Complex Animations:

• With @keyframes, you can create more complex animations that involve multiple stages and transitions.
• You can define different styles for different keyframes, enabling a wide variety of animations.

Handle Multiple Animations:

• You can use @keyframes it to handle multiple animations on the same element.
• By giving each animation a unique name, you can apply and control multiple animations independently.

Incorporate Easing Functions:

• @keyframes supports the use of easing functions, allowing you to control the acceleration and deceleration of the animation at each keyframe.
• This provides more fine-grained control over the animation’s visual effects.