.default-whmcs-client-area .announcements-section,
.default-whmcs-client-area .announcements-home-page {
    width: 100% !important;
    max-width: 100% !important;
}
.default-whmcs-client-area .announcement-slider-item {
    width: 100% !important;
    flex: 0 0 100% !important;
    max-width: 100% !important;
}