CSS Display None And Opacity Animation With Keyframes Not Working


Answer :

The display doesn't work with CSS transition or animation.



Use opacity, visibility or z-index. You can combine all them.



Try to use visibility: visible in place display: block and visibility: hidden in place display: none.



And finally, combine z-index: -1 and z-index: 100 for example.



Good work ;)



If you are using @keyframes you should use -webkit-animation instead of -webkit-transition. Here is the doc for @keyframes animation: https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Using_CSS_animations.



See code snippet below:





.parent {
  background-color: #000;
  color: #fff;
  width: 500px;
  height: 500px;
  padding: 5px;
}
.myDiv {
  display: none;
  opacity: 0;
  padding: 5px;
  color: #600;
  background-color: #cec;
}
.parent:hover .myDiv {
  display: block;
  opacity: 1;
  /* "both" tells the browser to use the above opacity
  at the end of the animation (best practice) */
  -webkit-animation: display-none-transition 1s both;
  animation: display-none-transition 1s both;
}
@-webkit-keyframes display-none-transition {
  0% {
    opacity: 0;
  }
}
@keyframes display-none-transition {
  0% {
    opacity: 0;
  }
}

<div class="parent">
  Hover on me...
  <div class="myDiv">Hello!</div>
</div>







2016 UPDATED ANSWER



To reflect today's best practices, I would use a transition instead of an animation. Here is the updated code:





.parent {
  background-color: #000;
  color: #fff;
  width: 500px;
  height: 500px;
  padding: 5px;
}
.myDiv {
  opacity: 0;
  padding: 5px;
  color: #600;
  background-color: #cec;
  -webkit-transition: opacity 1s;
  transition: opacity 1s;
}
.parent:hover .myDiv {
  opacity: 1;
}

<div class="parent">
  Hover on me...
  <div class="myDiv">Hello!</div>
</div>





You can not animate display property. You can try with visibility: hidden to visibility: visible



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