.drawer {
    /* Demo */
    border: 1px solid #d1d5db;
    border-radius: 0.25rem;
    height: 100%;
    width: 100%;

    display: flex;    
}

.drawer__sidebar {
    /* Demo */
    border-right: 1px solid #d1d5db;
    width: 25%;
}

.drawer__overlay {
    /* Demo */
    background: #4b5563;
    flex: 1;
}