css font does not work for menu, buttons, prize, product name, checkout

Site URL: https://radish-flute-xksb.squarespace.com/config/design/custom-css

Hello,

Integrating my own font works only for headlines and paragraphs – Not for menu, buttons, price, product name, checkout, ...
Below is my css so far. Would be fantastic to get some advice!

Thanks in advance 🙂

//merkury_bold

@font-face {

font-family: merkury_bold;

src: url(https://static1.squarespace.com/static/601d122b852db615309652d6/t/601e698b2fde0b5388e29a49/1612605836133/merkury_bold.otf);

}

//merkury_light

@font-face {

font-family: merkury_light;

src: url(https://static1.squarespace.com/static/601d122b852db615309652d6/t/601e6995fb454231c728a067/1612605845814/merkury_light.otf);

}

h1 {font-family: 'Merkury_bold';}
h2 {font-family: 'Merkury_bold';}
h3 {font-family: 'Merkury_bold';}

p {font-family: 'Merkury_light';}

/* navigation */
nav#mainNavigation span {
    font-family: 'merkury_bold' !important;
}

/* button */
.sqs-block-button-element {
    font-family: 'merkury_bold' !important;
}

Your site is private. Can you setup password & share url again?