Hardwired fonts in style .css - by mleihs

Hi,

I tried polishing the checkout and ran into three different fonts within the order table ( http://imgur.com/LPQwsVG ).

When looking at style.css I find the following

.woocommerce-checkout-review-order-table .cart-subtotal th {
  font-weight: 500 !important;
  font-family: 'Open Sans', sans-serif !important;
}
.woocommerce-checkout-review-order-table .cart-subtotal td {
  text-align: right;
}
.woocommerce-checkout-review-order-table .shipping th {
  /* font-family: 'Open Sans', sans-serif !important; */
  font-weight: 500 !important;
}
.woocommerce-checkout-review-order-table .order-total th {
  font-size: 18px !important;
  font-weight: 500 !important;
  border-bottom: none;
}
.woocommerce-checkout-review-order-table .order-total td {
  text-align: right;
  border-bottom: none;
}
.woocommerce-checkout-review-order-table .order-total span.amount {
  color: #000 !important;
  font-family: Georgia;
  font-size: 24px;
  font-weight: 400;
}

Why are there hard wired font settings within the css file?

Do they serve a purpose or can I remove them?

Best regards