Preload Web Font in shopify

gistfile1.txt

<style>
@font-face {
  font-family: 'Montserrat'; Replace Montserrat with your web  font name 
  font-style: normal;
  font-weight: 400; Replace it with your font weight and you'll find it google web font helper
  font-display: swap; Don't Change it
  src: local('Montserrat'), local('Montserrat-Regular'), Replace Montserrat with your web  font name 
       url(https://cdn.shopify.com/s/files/1/0077/8295/7119/files/montserrat-v12-latin-regular.woff2) format('woff2'), Replace Link with web font file url specific for this font weight and with woff2 file type ( admin > settings > files )
       url(https://cdn.shopify.com/s/files/1/0077/8295/7119/files/montserrat-v12-latin-regular.woff) format('woff'); Replace Link with web font file url specific for this font weight and with woff file type ( admin > settings > files )
}
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: local('Montserrat Bold'), local('Montserrat-Bold'),
       url(https://cdn.shopify.com/s/files/1/0077/8295/7119/files/montserrat-v12-latin-700.woff2) format('woff2'), Replace Link with web font file url specific for this font weight and with woff2 file type ( admin > settings > files )
       url(https://cdn.shopify.com/s/files/1/0077/8295/7119/files/montserrat-v12-latin-700.woff) format('woff'); Replace Link with web font file url specific for this font weight and with woff file type ( admin > settings > files )
}

and you can also add more font style 
</style>