.ag-theme-alpine .ag-header-cell.wrap-header .ag-header-cell-text {
    white-space: normal !important;
    word-break: break-word !important;
}
.ag-theme-alpine .ag-header-cell.wrap-header .ag-header-cell-label {
    height: auto !important;
}

/* Vertical (rotated) headers */
.ag-theme-alpine .ag-header-cell.rotate-header {
    height: 140px; /* extra room for rotated text */
    overflow: visible !important;
}
.ag-theme-alpine .ag-header-cell.rotate-header .ag-header-cell-label {
    height: 100% !important;
    display: flex;
    align-items: center; /* vertical center for readability */
    justify-content: center; /* horizontal center */
}
.ag-theme-alpine .ag-header-cell.rotate-header .ag-header-cell-text {
    transform: rotate(90deg);
    transform-origin: center center;
    white-space: nowrap !important;
    overflow: visible !important;
    display: inline-block;
    padding: 0;
}