CSS - Animations : Keyframes and Animation Properties

Animations in CSS

One effective technique to give web objects movement and vitality is with CSS animations. An animation, as opposed to a transition, can have numerous phases of change, not just a beginning and a conclusion, and can alter one or more CSS attributes continually. CSS animations can be managed using several animation attributes and @keyframes tags.

Keyframes

CSS animations start with @keyframes. It serves the purpose of specifying the styles that will be used throughout the animation at different stages. For every point in the animation sequence, from start (0%) to end (100%), there is a corresponding percentage that defines it. Keyframe counts are unlimited as long as they serve the intended purpose.

Animation Properties

CSS animation properties determine the behavior of an animation. Important animation properties to consider are;

  •  animation name; Connects the animation to a set of @keyframes.
  •  animation duration; Specifies the duration it takes for the animation to complete one cycle.
  •  animation timing function; Controls how the animation progresses during its duration, such, as linear, ease in or ease out.
  •  animation delay; Pauses the start of the animation.
  •  animation iteration count; Indicates how times the animation will repeat.
  •  animation direction; Decides whether the animation should reverse its direction.
  •  animation fill mode; Defines which values are applied by the animation before and after it runs.

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CSS

Beginner 5 Hours

Animations in CSS

One effective technique to give web objects movement and vitality is with CSS animations. An animation, as opposed to a transition, can have numerous phases of change, not just a beginning and a conclusion, and can alter one or more CSS attributes continually. CSS animations can be managed using several animation attributes and @keyframes tags.

Keyframes

CSS animations start with @keyframes. It serves the purpose of specifying the styles that will be used throughout the animation at different stages. For every point in the animation sequence, from start (0%) to end (100%), there is a corresponding percentage that defines it. Keyframe counts are unlimited as long as they serve the intended purpose.

Animation Properties

CSS animation properties determine the behavior of an animation. Important animation properties to consider are;

  •  animation name; Connects the animation to a set of @keyframes.
  •  animation duration; Specifies the duration it takes for the animation to complete one cycle.
  •  animation timing function; Controls how the animation progresses during its duration, such, as linear, ease in or ease out.
  •  animation delay; Pauses the start of the animation.
  •  animation iteration count; Indicates how times the animation will repeat.
  •  animation direction; Decides whether the animation should reverse its direction.
  •  animation fill mode; Defines which values are applied by the animation before and after it runs.

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Frequently Asked Questions for CSS

Content, padding, border, and margin make up the box model.

Relative moves from original position; absolute positions relative to nearest positioned ancestor.

id is unique; class can be reused.

visibility hides but keeps space; display removes element from layout.

Minify files, reduce specificity, and remove unused styles.

Overrides all other declarations, regardless of specificity.

Use margin: auto or flexbox/grid techniques.

Allow responsive design by applying styles based on screen size or device.

Define relationships between selectors: descendant ( ), child (>), adjacent (+), sibling (~).

Tools like SASS or LESS add features like variables and nesting to CSS.

Targets part of an element, like ::before or ::after.

Use @import "filename.css"; at the top of the file.

Controls stacking order of overlapping elements.

Forces a property to inherit value from parent.

Static — not affected by top, bottom, left, or right.

Use universal selector * or define styles in body/root.

em is relative to parent; rem is relative to root element.

Inline, internal (embedded), and external CSS.

A layout model for arranging elements in rows or columns with flexible sizing.

Targets elements in a specific state, like :hover or :nth-child().

Use fluid layouts, media queries, and relative units.

CSS styles HTML elements to control layout, color, fonts, and responsiveness.

Reusable custom property values, declared with --var-name.

Determines which rule applies when multiple rules target the same element.

Performs calculations to dynamically set CSS property values.

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