You need the @keyframes to make it animate I believe. 

HTH,

Best,
Karl

Sent from losPhone

> On Jun 22, 2021, at 1:58 PM, Aaron Gray <aaronngray.li...@gmail.com> wrote:
> 
> The following is animated using height, which is like drawing a curtain :-
> 
> https://jsfiddle.net/AaronNGray/kf0br46u/31/
> 
> HTML
> <div id="box">
>    <div id="content">AaronNGray</div>
> </div>
> 
> CSS
> body {
>  margin: 0px;
>  padding: 0px;
> }
> #box {
>    height: 100px;
>    width: auto;
>    background: transparent;
>    transition: all 0.4s ease-in-out;
> }
> #content {
>    overflow: hidden;
>    width: auto;
>    background: white;
>    height: 0px;
>    transition: all 0.4s ease-in-out;
>    border-bottom: 2px solid black;
>    -webkit-transition: all .8s ease;
>    -moz-transition: all .8s ease;
>    -ms-transition: all .8s ease;
>    -o-transition: all .8s ease;
>    transition: all .8s ease;
> }
> #box:hover > #content {
>    height: 50px;
>    top: 0px;
> }
> 
> What I need is to be able to animate 'top' so the content div slides
> downwards.
> 
> This is what I have tried but it does not work.:-
> 
> https://jsfiddle.net/AaronNGray/kf0br46u/38/
> 
> body {
>  margin: 0px;
>  padding: 0px;
> }
> #box {
>    height: 100px;
>    top: -50px;
>    width: auto;
>    background: transparent;
>    transition: top 0.4s ease-in-out;
> }
> #content {
>    overflow: hidden;
>    width: auto;
>    background: white;
>    top: -50px;
>    height: 50px;
>    transition: top 0.4s ease-in-out;
>    border-bottom: 2px solid black;
>    -webkit-transition: top .8s ease;
>    -moz-transition: top .8s ease;
>    -ms-transition: top .8s ease;
>    -o-transition: top .8s ease;
> }
> #box:hover > #content {
>    top: 50px;
> }
> 
> Hope you can help and its something simple I am missing, usually is :)
> 
> Regards,
> 
> Aaron
> -- 
> Aaron Gray
> 
> Independent Open Source Software Engineer, Computer Language Researcher,
> Information Theorist, and amateur computer scientist.
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