Animation Display Block to Display None - CSS - css

Question

Display None to Display Block animation is working
but I need the animation to work this way also
- Animation Display Block to Display None
the animations is not working when action go from block to Display None
have an idea what can be the problem?
#dboldDiv,#dbnewDiv {
animation: anim .4s ease-in-out;
}
#keyframes anim {
0% {
display: none;
opacity: 0;
}
1% {
display: block;
opacity: 0;
transform: scale(0.8);
}
100% {
opacity: 1;
transform: scale(1);
}
}

Answer 1

display is not animatable property
There are two category of properties animatable and not animatable
you can check animated properties list from here :
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_animated_properties

Answer 2

display:none won't work smooth.
For fluent disappearing try using visibility:hidden, or if just keep 0 opacity and add pointer-events:none, so the object doesn't catch any mouse events.
document.getElementById('hide').addEventListener('click', function(){
document.getElementById('link').className = 'hide';
});
document.getElementById('show').addEventListener('click', function(){
document.getElementById('link').className = 'show';
});
document.getElementById('link').addEventListener('click', function(){
alert('clicked');
});
#link {
display:block;
}
#link.show {
animation: anim1 .4s;
animation-fill-mode: forwards;
}
#link.hide {
animation: anim2 .4s;
animation-fill-mode: forwards;
animation-direction: reverse;
}
#keyframes anim1 {
0% {
opacity: 0.3;
pointer-events:none;
}
100% {
opacity: 1;
pointer-events:all;
}
}
#keyframes anim2 {
0% {
opacity: 0.3;
pointer-events:none;
}
100% {
opacity: 1;
pointer-events:all;
}
}
<button id="hide">Hide</button>
<button id="show">Show</button>
hidding & showing