.MuiAccordionDetails-root {
    display: block !important;
    padding: 0 !important;
}

.MuiAccordionPanelDetails-root .MuiPaper-root {
    box-shadow: none !important;
}

.MuiAccordionSummary-root {
    background-color: #e8e8e8 !important;
}

.not-expandable button {
    visibility: hidden;
}