body {
    padding: 20px;
}

.upload-form {
    max-width: 100%;
    margin: auto;
}

.file-section {
    margin-bottom: 20px;
}

.file-row {
    display: flex;
    flex-wrap: nowrap;
}

.file-col {
    flex: 1;
    min-width: 300px;
}

.add-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.hidden {
    display: none;
}