[LifesGreatestGift]

replace

.wcf_notifications {
    background:url("images/wcf/50opacity.png") repeat 0 0 transparent;
    border:1px solid #000000;
    bottom: 20px;
    left: 20px;
    padding: 10px 15px;
    position: fixed;
    z-index: 10;
}

with

.wcf_notifications {
    background-color:rgba(0, 0, 0, 0.5);
    bottom: 20px;
    left: 20px;
    padding: 10px 15px;
    position: fixed;
    z-index: 10;
     -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    -khtml-border-radius: 5px;
    border-radius: 5px;
}