Css – Maintaining the final state at end of a CSS3 animation

csscss-animations

I'm running an animation on some elements that are set to opacity: 0; in the CSS. The animation class is applied onClick, and, using keyframes, it changes the opacity from 0 to 1 (among other things).

Unfortunately, when the animation is over, the elements go back to opacity: 0 (in both Firefox and Chrome). My natural thinking would be that animated elements maintain the final state, overriding their original properties. Is this not true? And if not, how can I get the element to do so?

The code (prefixed versions not included):

@keyframes bubble {
    0%   { transform:scale(0.5); opacity:0.0; }
    50%  { transform:scale(1.2); opacity:0.5; }
    100% { transform:scale(1.0); opacity:1.0; }
}

Best Answer

Try adding animation-fill-mode: forwards;. For example like this:

-webkit-animation: bubble 1.0s forwards; /* for less modern browsers */
        animation: bubble 1.0s forwards;

Related Solutions

Css – How to combine a background-image and CSS3 gradient on the same element

Multiple backgrounds!

body {
  background: #eb01a5;
  background-image: url("IMAGE_URL"); /* fallback */
  background-image: url("IMAGE_URL"), linear-gradient(#eb01a5, #d13531); /* W3C */
}

These 2 lines are the fallback for any browser that doesn't do gradients. See notes for stacking images only IE < 9 below.

Line 1 sets a flat background color.
Line 2 sets the background image fallback.

The final line sets a background image and gradient for browsers that can handle them.

Line 3 is for all relatively modern browsers.

Nearly all current browsers have support for multiple background images and css backgrounds. See http://caniuse.com/#feat=css-gradients for browser support. For a good post on why you don't need multiple browser prefixes, see http://codepen.io/thebabydino/full/pjxVWp/

Layer Stack

It should be noted that the first defined image will be topmost in the stack. In this case, the image is on TOP of the gradient.

For more information about background layering see http://www.w3.org/TR/css3-background/#layering.

Stacking images ONLY (no gradients in the declaration) For IE < 9

IE9 and up can stack images this same way. You could use this to create a gradient image for ie9, though personally, I wouldn't. However to be noted when using only images, ie < 9 will ignore the fallback statement and not show any image. This does not happen when a gradient is included. To use a single fallback image in this case I suggest using Paul Irish's wonderful Conditional HTML element along with your fallback code:

.lte9 #target{ background-image: url("IMAGE_URL"); }

Background position, sizing etc.

Other properties that would apply to a single image may also be comma separated. If only 1 value is supplied, that will be applied to all stacked images including the gradient. background-size: 40px; will constrain both the image and the gradient to 40px height and width. However using background-size: 40px, cover; will make the image 40px and the gradient will cover the element. To only apply a setting to one image, set the default for the other: background-position: 50%, 0 0; or for browsers that support it use initial: background-position: 50%, initial;

You may also use the background shorthand, however this removes the fallback color and image.

body{
    background: url("IMAGE_URL") no-repeat left top, linear-gradient(#eb01a5, #d13531);
}

The same applies to background-position, background-repeat, etc.

Css – Stopping a CSS3 Animation on last frame

You're looking for:

animation-fill-mode: forwards;

More info on MDN and browser support list on canIuse.

Best Answer

Related Solutions

Css – How to combine a background-image and CSS3 gradient on the same element

Css – Stopping a CSS3 Animation on last frame

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