#loader {
    background: rgba(255, 255, 255, 1);
    transition: background 1s ease-out;
    -webkit-transition: background 1s ease-out;
}
#loader.done {
    background: rgba(255, 255, 255, 0);
}
#loader.hide {
    display: none;
}
#loader .message {
    width: 50%;
    position: absolute;
    left: 45%;
    top: 50%;
    font-size: 3em;
    font-weight: bold;
    letter-spacing:1pt;
    word-spacing:2pt;
    line-height:1;
    color: #3F51B5;
}
#add-markers {
    position: absolute;
    top: 10px;
    right: 10px;
}