JSFiddle - React, Tailwind, and code Playground

HTML

<div class="avatarCropper" style="float:right; margin: 5px -12px 5px 10px;margin-right: 160px;"><a href="profile.php?do=editavatar"><img src="image.php?u=1&amp;dateline=1358908891" width="60" height="60" border="0" alt="Your Avatar" title="Your Avatar"></a></div>

CSS

#fixed-height{
    width:100%;
    height:1em;
    overflow:hidden;
    background-color:lightblue;
    color:red;
    z-index:10;
}
#fixed-height:hover{
    overflow:visible;
}
#right-below{
    background:lightgreen;
    color:black;
    z-index:1;
}