How to change font size of checkout button and continue shopping button

Site URL: https://www.healthtastic.me/

Hello

i am having trouble with changing the font size of the checkout button and continue shopping button.

Please help 😞

Add to Design > Custom CSS

a.cart-continue-button {
    font-size: 30px;
}
button.cart-checkout-button {
    font-size: 30px;
}