.placeholder { 
    display: block;
    background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mPc+R8AAncBup7ZXo8AAAAASUVORK5CYII=); 
    &.done {
        background-image: url('');
    }
}

[edit-key] {

    &.done {
        background-color: '';    
    }
    &:not(.done) {
        background-color: gainsboro;
        color: gainsboro !important;
    }
}