Product page description tab title font

Hello support,

I have most of my site configured now and using a lot of CSS from this support forum which has helped me so much.

But I have one issue unsolved. The description font on the product pages. How to change the tab title font size with CSS?

I found a thread using this code:
a.woodmart-accordion-title.tab-title-description.active {
color: #ff6c00;
font-size: 20px;
}

.woocommerce-tabs .woodmart-accordion-title {
font-size: 20px;
color: #ff6c00;
}

(but it has not worked)

Please could you assist me

Thanks! 🙂