how to change element CSS position with animation

Question

I want to change an HTML element position from static to fixed at top 50% and left 50% of the browser window but the code just leads to background-color change!

div {
    width: 100px;
    height: 100px;
    background-color: red;
    position: static;
    top: auto;
    left: auto;
    animation-name: example;
    animation-duration: 4s;
}

@keyframes example {
    from {
        background-color: red;
        position: static;
        top: auto;
        left: auto;
    }
    to {
      background-color: yellow;
      position: fixed;
      top: 50%;
      left: 50%;
     }
}

Answer 1

Short answer: You can't animate position.

Instead of applying position: fixed through keyframes try to add a class fixed or something via javascript.

An example: https://jsfiddle.net/6Ldqhoce/

Alternative you could move the element with transform: translate but it won't be fixed.

Answer 2

I found the answer via 'Vangel Tzo' help :

div {
    width: 100px;
    height: 100px;
    background-color: red;
    animation-name: example;
    animation-duration: 4s;
}

@keyframes example {
    from {
        background-color: red;
    }
    to {
      background-color: yellow;
      transform: translate(50vw, 50vh);
     }
}