div.set {
    min-height: 288px;
}

div.set:empty {
    background: #F5F5F5;
}

div.set:empty:before {
    text-align: center;
    width: 100%;
    display: block;
    padding-top: 138px;
    vertical-align: middle;
    content: 'Click GENERATE to create maps.';
}

div.set .spinner {
    margin-left: 50%;
    padding-top: 130px;
    -webkit-box-sizing: content-box;
    box-sizing: content-box;
}

img.map {
    border: 1px solid #E0E0E0;
}