#system-message-container,
.joomla-alert,
.joomla-alert--error,
.toast-container {
    z-index: 99999 !important;
}

.toast-container {
    top: 20px !important;
    right: auto !important;
    left: 50% !important;
    bottom: auto !important;
    transform: translateX(-50%) !important;
}