label.required:after {
    content: " *";
    color: #dc3545;
}

/* Estensioni Bootstrap 5 */
.btn-sm,
.btn-group-sm>.btn {
    --bs-btn-padding-y: 0.25rem;
    --bs-btn-padding-x: 0.5rem;
    --bs-btn-font-size: 0.875rem;
    --bs-btn-border-radius: var(--bs-border-radius-sm);
}

.btn-sm+.dropdown-toggle-split,
.btn-group-sm>.btn+.dropdown-toggle-split {
    padding-right: 0.375rem;
    padding-left: 0.375rem;
}

.btn-xs,
.btn-group-xs>.btn {
    --bs-btn-padding-y: 0.125rem;
    --bs-btn-padding-x: 0.5rem;
    --bs-btn-font-size: 0.75rem;
    --bs-btn-border-radius: var(--bs-border-radius-sm);
}

.btn-xs+.dropdown-toggle-split,
.btn-group-xs>.btn+.dropdown-toggle-split {
    padding-right: 0.125rem;
    padding-left: 0.125rem;
}

.btn-xxs,
.btn-group-xxs>.btn {
    --bs-btn-padding-y: 0.0625rem;
    --bs-btn-padding-x: 0.3rem;
    --bs-btn-font-size: 0.625rem;
    --bs-btn-border-radius: var(--bs-border-radius-sm);
}

.btn-xxs+.dropdown-toggle-split,
.btn-group-xxs>.btn+.dropdown-toggle-split {
    padding-right: 0.0625rem;
    padding-left: 0.0625rem;
}