body {
    font-family: 'Source Sans Pro', sans-serif;
}

.logo {
    width: 100px;
}

.dropzone {
    min-height: 150px;
    border: 2px dashed #2196F3;
    background: #607d8b0d;
    padding: 20px 20px;
}

.hidden_iframe {
    height: 0;
    width: 0;
    border: 0;
}