div[filepond-grid-columns='4'] .filepond--root[data-style-panel-layout='grid'] .filepond--item {
    width: calc(25% - 0.5rem);
}

div[filepond-background-color='white'] .filepond--root[data-style-panel-layout='grid'] .filepond--image-preview {
    background: white;
}