.message {
    position: relative;
}
.message span.remark {
    display: none;
}
.message a:hover span.remark {
    background: none repeat scroll 0 0 #EEFFEE;
    border: 1px solid #CCCCCC;
    color: #000000;
    display: block;
    line-height: 1.5em;
    margin: 0.8em;
    padding: 0.8em;
    position: absolute;
    top: 40px;
    width: 40em;
}