Why are Limited Availability and Out of Stock tags styled differently?

Site URL: https://www.littleboxes.shop/build

Does anyone know why the "Limited Availability" and "Out of Stock" tags on this page are different styling?

How do I make them the same styling?

Thank you!

I don't see 2 text. Did you solve?

I didn't solve. Here's a photo, @tuanphan. You'll notice that "Waitlisted" is bolded while "Almost out" is not. How do I make these the same styles?

Try adding to Home > Design > Custom CSS

.product-scarcity {
    font-weight: bold;
}