Show div with animation css

CSS Animations

CSS allows animation of HTML elements without using JavaScript or Flash!

In this chapter you will learn about the following properties:

• @keyframes
• animation-name
• animation-duration
• animation-delay
• animation-iteration-count
• animation-direction
• animation-timing-function
• animation-fill-mode
• animation

Browser Support for Animations

The numbers in the table specify the first browser version that fully supports the property.

Property
@keyframes	43.0	10.0	16.0	9.0	30.0
animation-name	43.0	10.0	16.0	9.0	30.0
animation-duration	43.0	10.0	16.0	9.0	30.0
animation-delay	43.0	10.0	16.0	9.0	30.0
animation-iteration-count	43.0	10.0	16.0	9.0	30.0
animation-direction	43.0	10.0	16.0	9.0	30.0
animation-timing-function	43.0	10.0	16.0	9.0	30.0
animation-fill-mode	43.0	10.0	16.0	9.0	30.0
animation	43.0	10.0	16.0	9.0	30.0

What are CSS Animations?

An animation lets an element gradually change from one style to another.

You can change as many CSS properties you want, as many times as you want.

To use CSS animation, you must first specify some keyframes for the animation.

Keyframes hold what styles the element will have at certain times.

The @keyframes Rule

When you specify CSS styles inside the @keyframes rule, the animation will gradually change from the current style to the new style at certain times.

To get an animation to work, you must bind the animation to an element.

The following example binds the «example» animation to the element. The animation will last for 4 seconds, and it will gradually change the background-color of the element from «red» to «yellow»:

Example

/* The element to apply the animation to */
div width: 100px;
height: 100px;
background-color: red;
animation-name: example;
animation-duration: 4s;
>

Note: The animation-duration property defines how long an animation should take to complete. If the animation-duration property is not specified, no animation will occur, because the default value is 0s (0 seconds).

In the example above we have specified when the style will change by using the keywords «from» and «to» (which represents 0% (start) and 100% (complete)).

It is also possible to use percent. By using percent, you can add as many style changes as you like.

The following example will change the background-color of the element when the animation is 25% complete, 50% complete, and again when the animation is 100% complete:

Example

/* The element to apply the animation to */
div width: 100px;
height: 100px;
background-color: red;
animation-name: example;
animation-duration: 4s;
>

The following example will change both the background-color and the position of the element when the animation is 25% complete, 50% complete, and again when the animation is 100% complete:

Example

/* The element to apply the animation to */
div width: 100px;
height: 100px;
position: relative;
background-color: red;
animation-name: example;
animation-duration: 4s;
>

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:

Example

div <
width: 100px;
height: 100px;
position: relative;
background-color: red;
animation-name: example;
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:

Example

div <
width: 100px;
height: 100px;
position: relative;
background-color: red;
animation-name: example;
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:

Example

div <
width: 100px;
height: 100px;
position: relative;
background-color: red;
animation-name: example;
animation-duration: 4s;
animation-iteration-count: 3;
>

The following example uses the value «infinite» to make the animation continue for ever:

Example

div <
width: 100px;
height: 100px;
position: relative;
background-color: red;
animation-name: example;
animation-duration: 4s;
animation-iteration-count: infinite;
>

Run Animation in Reverse Direction or Alternate Cycles

The animation-direction property specifies whether an animation should be played forwards, backwards or in alternate cycles.

The animation-direction property can have the following values:

• normal — The animation is played as normal (forwards). This is default
• reverse — The animation is played in reverse direction (backwards)
• alternate — The animation is played forwards first, then backwards
• alternate-reverse — The animation is played backwards first, then forwards

The following example will run the animation in reverse direction (backwards):

Example

div <
width: 100px;
height: 100px;
position: relative;
background-color: red;
animation-name: example;
animation-duration: 4s;
animation-direction: reverse;
>

The following example uses the value «alternate» to make the animation run forwards first, then backwards:

Example

div <
width: 100px;
height: 100px;
position: relative;
background-color: red;
animation-name: example;
animation-duration: 4s;
animation-iteration-count: 2;
animation-direction: alternate;
>

The following example uses the value «alternate-reverse» to make the animation run backwards first, then forwards:

Example

div <
width: 100px;
height: 100px;
position: relative;
background-color: red;
animation-name: example;
animation-duration: 4s;
animation-iteration-count: 2;
animation-direction: alternate-reverse;
>

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:

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

The following example shows some of the different speed curves that can be used:

Example

Specify the fill-mode For an Animation

CSS animations do not affect an element before the first keyframe is played or after the last keyframe is played. The animation-fill-mode property can override this behavior.

The animation-fill-mode property specifies a style for the target element when the animation is not playing (before it starts, after it ends, or both).

The animation-fill-mode property can have the following values:

• none — Default value. Animation will not apply any styles to the element before or after it is executing
• forwards — The element will retain the style values that is set by the last keyframe (depends on animation-direction and animation-iteration-count)
• backwards — The element will get the style values that is set by the first keyframe (depends on animation-direction), and retain this during the animation-delay period
• both — The animation will follow the rules for both forwards and backwards, extending the animation properties in both directions

The following example lets the element retain the style values from the last keyframe when the animation ends:

Example

div <
width: 100px;
height: 100px;
background: red;
position: relative;
animation-name: example;
animation-duration: 3s;
animation-fill-mode: forwards;
>

The following example lets the element get the style values set by the first keyframe before the animation starts (during the animation-delay period):

Example

div <
width: 100px;
height: 100px;
background: red;
position: relative;
animation-name: example;
animation-duration: 3s;
animation-delay: 2s;
animation-fill-mode: backwards;
>

The following example lets the element get the style values set by the first keyframe before the animation starts, and retain the style values from the last keyframe when the animation ends:

Example

div <
width: 100px;
height: 100px;
background: red;
position: relative;
animation-name: example;
animation-duration: 3s;
animation-delay: 2s;
animation-fill-mode: both;
>

Animation Shorthand Property

The example below uses six of the animation properties:

Example

div <
animation-name: example;
animation-duration: 5s;
animation-timing-function: linear;
animation-delay: 2s;
animation-iteration-count: infinite;
animation-direction: alternate;
>

The same animation effect as above can be achieved by using the shorthand animation property:

Example

CSS Animation Properties

The following table lists the @keyframes rule and all the CSS animation properties:

Property	Description
@keyframes	Specifies the animation code
animation	A shorthand property for setting all the animation properties
animation-delay	Specifies a delay for the start of an animation
animation-direction	Specifies whether an animation should be played forwards, backwards or in alternate cycles
animation-duration	Specifies how long time an animation should take to complete one cycle
animation-fill-mode	Specifies a style for the element when the animation is not playing (before it starts, after it ends, or both)
animation-iteration-count	Specifies the number of times an animation should be played
animation-name	Specifies the name of the @keyframes animation
animation-play-state	Specifies whether the animation is running or paused
animation-timing-function	Specifies the speed curve of the animation

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Show/Hide HTML Elements With Animation (Simple Examples)

Welcome to a tutorial on how to show/hide HTML elements with animations. So you need to toggle the visibility of an element, but with bells and whistles?

• The HTML element –
  TEXT
• The CSS classes:
  • #fade < transition: opacity 1s; >
  • .hide
  • Lastly, just toggle the hide CSS class using Javascript – document.getElementById(«fade»).classList.toggle(«hide»);

  Yes, setting the CSS transition is all it takes to create the animation magic. But at the time of writing, it is impossible to animate display: none , thus the “roundabout” way to set the visibility and opacity . Read on for more examples!

  TLDR – QUICK SLIDES

  

  TABLE OF CONTENTS

  SHOW/HIDE HTML ELEMENTS WITH ANIMATION

  All right, let us now get into more examples of toggling the visibility of an HTML element, with animations.

  EXAMPLE 1) FADE IN & OUT

  FADE DEMO

  1A) THE HTML

  These shouldn’t be too much of a mystery. Just a dummy and to toggle the fade effect.

  1B) THE CSS

  /* (A) SET CSS TRANSITION */ #fade < transition: all 1s; >/* (B) HIDE */ #fade.hide < visibility: hidden; opacity: 0; height: 0; /* optional */ >

  This is the same as the snippet in the introduction, but take note of the additional height: 0 here. Yes, we can hide an element using visibility: hidden , but it will still “occupy space”. Use height: 0 if you want to collapse the element on hiding.

  1C) THE JAVASCRIPT

  Just a one-line Javascript to toggle the hide CSS class on the HTML element.

  EXAMPLE 2) SLIDE IN & OUT

  SLIDE DEMO

  2A) THE HTML

  2B) THE CSS

  #slide < /* (A) TURN INTO A BOX */ background: #cf2f1d; padding: 10px; border: 1px solid #b52110; color: #fff; font-weight: bold; /* (B) DEFAULT - HIDE OUT OF SCREEN */ position: fixed; bottom: 5px; left: -999px; /* (C) CSS ANIMATION */ transition: all 0.5s; visibility: hidden; >/* (D) SHOW - BRING ELEMENT BACK ON SCREEN */ #slide.show

  1. Turn the element into a “box” instead.
  2. Hide it off the screen with position: fixed and left: -999px .
  3. Same old CSS animation.
  4. Lastly, bring the element back onto the screen with left: 5px .

  2C) THE JAVASCRIPT

  Same old “toggle” CSS class, except this is show instead.

  EXAMPLE 3) COLLAPSE

  COLLAPSE DEMO

  3A) THE HTML

  3B) THE CSS

  /* (A) CONTENT BOX */ #collapse < /* (A1) BACKGROUND IMAGE */ background-image: url("show-hide.jpg"); background-size: cover; background-position: center; /* (A2) DIMENSIONS */ max-width: 700px; /* optional */ height: 300px; /* fixed size required */ /* (A3) CSS TRANSITION */ transition: all 0.5s; >/* (B) HIDE */ #collapse.hide

  This one should be self-explanatory too – We are just toggling height: 0 to collapse and expand a container. Yes, for CSS animation to work with width height , they cannot be set to auto .

  3C) THE JAVASCRIPT

  I don’t think this needs explanation by now.

  DOWNLOAD & NOTES

  Here is the download link to the example code, so you don’t have to copy-paste everything.

  SUPPORT

  600+ free tutorials & projects on Code Boxx and still growing. I insist on not turning Code Boxx into a «paid scripts and courses» business, so every little bit of support helps.

  EXAMPLE CODE DOWNLOAD

  Click here for the source code on GitHub gist, just click on “download zip” or do a git clone. I have released it under the MIT license, so feel free to build on top of it or use it in your own project.

  EXTRA BITS & LINKS

  That’s all for this guide, and here is a small section on some extras and links that may be useful to you.

  LINKS & REFERENCES

  INFOGRAPHIC CHEAT SHEET

  

  THE END

  Thank you for reading, and we have come to the end of this guide. I hope that it has helped you with your project, and if you want to share anything with this guide, please feel free to comment below. Good luck and happy coding!

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