body{
    background: url("http://subtlepatterns.com/patterns/stardust.png");
}

.centered-form .panel{
    background: rgba(255, 255, 255, 0.8);
    box-shadow: rgba(0, 0, 0, 0.3) 20px 20px 20px;
    color: #4e5d6c;
}

.centered-form{
    margin-top: 60px;
}

#btn-customize {
    font-size:0.8em;
    padding:2px;
    margin:5px 0;
    float:right;
}