Changing font in product page

How do you change the font of the add to cart button and product page in general? 

Thank you in advance 

57 minutes ago, primeglobalfitness said:

How do you change the font of the add to cart button and product page in general? 

Thank you in advance 

Can you share your site with the protected password so I can take a look?

the link : https://www.primefitnessglobal.com/preworkout/p/all-black-everything-abe-pre-workout-sb3xr-j6bnz-lsany-72t9x

29 minutes ago, primeglobalfitness said:

the link : https://www.primefitnessglobal.com/preworkout/p/all-black-everything-abe-pre-workout-sb3xr-j6bnz-lsany-72t9x

Try adding to Home > Design > Custom Css

@media only screen and (max-width: 767px) {
  /*Add to card style on mobile*/
  .sqs-add-to-cart-button-inner {
    font-family: arial; /*font name*/
    font-size: 20px; /*size of text*/
  }

  /*Title of variant*/
  .variant-option-title {
    font-size: 20px;
  }

  /*Quantity label*/
  .quantity-label {
    font-size: 20px;
  }

  /*style for flavour dropdown*/
  .product-details .variant-select-wrapper:before {
    font-size: 20px;
  }
  .variant-select-wrapper[data-text="Select Flavour"] {
    display: flex;
    justify-content:center;
    align-items: center;
  }

  .product-details .variant-select-wrapper:after {
    height: 0.5rem;
    width: 0.5rem;
  }
}

Yes that works for only on mobile view and for add to cart but how do i change the select flavour and quantity box

You can try my above code again

How do i change the font ? and make it so it shows on desktop as well as mobile. 

Thanks 

How do i change the font ? and make it so it shows on desktop as well as mobile. 

Thanks 

You can use the font-family as I shared before