JSFiddle - React, Tailwind, and code Playground

HTML

<div id="area">
</div>
<div id="kontakt">Jmeno, Prijmeni<br>email</div>

CSS

#area {
    height: 300px;
    width: 300px;
    background: navy;
    position: relative;
}
#kontakt {
    background: #ccc;
    display: none;
    position: absolute;
    z-index: 1;
    left: 290px;
    top: 290px;
}

JavaScript

$(document).ready(function(){
    $("#area").live("mouseover", function(){
        $("#kontakt").fadeIn("slow");
    }).live("mouseout", function(){
        $("#kontakt").fadeOut("slow");
    });
});