@font-face {
     font-family: "TT Firs Neue"; /* The name you choose to use in your CSS */
     src: url("../TTFirsNeue/woff2/TT_Firs_Neue_Medium.woff2") format("woff2"), url("../TTFirsNeue/woff/TT_Firs_Neue_Medium.woff") format("woff");
     font-weight: 500; /* Corresponds to 'Medium' weight */
     font-style: normal;
}

@font-face {
     font-family: "TT Firs Neue";
     src: url("../TTFirsNeue/woff2/TT_Firs_Neue_Bold.woff2") format("woff2"), url("../TTFirsNeue/woff/TT_Firs_Neue_Bold.woff") format("woff");
     font-weight: 700; /* Corresponds to 'Bold' weight */
     font-style: normal;
}

/* Add more @font-face rules for all other weights (Light, Medium, Black, Italic, etc.) you plan to use */