gistfile1.css

.arrow.down:hover::before {
    position: fixed;
    display: block;
    z-index: 1000;
    padding: 2px 0;
    border-top: 1px solid #333;
    content: "Please do not downvote based on team fandom.";
    text-align: center;
    -moz-border-radius: 5px;
    -webkit-border-radius: 0;
    bottom: 0;
    width: 100%;
    left: 0;
    background-color: fireBrick;
    -moz-box-shadow: inset 1px 1px 0 rgba(255, 255, 255, .4);
    -webkit-box-shadow: inset 1px 1px 0 rgba(255, 255, 255, .4);
    color: #FEFEFE;
    text-shadow: 0 -1px 1px #555;
    font-size: 12px;
}