Custom Font Error

Site URL: https://www.inputcollective.com

Hi there, I have the following code pasted in the CSS editor but it simply won't replace the pre-existing font pack. Any ideas?

// ASSIGNING FONTS //

// URBANI ULTRABLACK //

@font-face {   
font-family: 'Urbani-UltraBlack';   
src: url(https://static1.squarespace.com/static/5ff8758cdd4cdc650b26228b/t/6012cd06753c2b683316bc9a/1611844870999/Urbani-UltraBlack.otf), url(https://static1.squarespace.com/static/5ff8758cdd4cdc650b26228b/t/60421d373f35b3501dbc78a3/1614945591555/Urbani-UltraBlack.woff), url(https://static1.squarespace.com/static/5ff8758cdd4cdc650b26228b/t/60421d41bbcd3b44563faf42/1614945601394/Urbani-UltraBlack.woff2); 
}

// URBANI LIGHT //

@font-face {   
font-family: 'Urbani-Light';   
src: url(https://static1.squarespace.com/static/5ff8758cdd4cdc650b26228b/t/6012cfcf38689f00792b1ae6/1611845584100/Urbani-Light.otf), url(https://static1.squarespace.com/static/5ff8758cdd4cdc650b26228b/t/60421d54f39ed9422332650b/1614945621145/Urbani-Light.woff), url(https://static1.squarespace.com/static/5ff8758cdd4cdc650b26228b/t/60421d5ab6044c2b87cb7516/1614945626646/Urbani-Light.woff2); 
}

// FONT ASSIGNMENT // 

H1 {
  font-family: 'Urbani-UltraBlack';
}

H2 {
  font-family: 'Urbani-UltraBlack';
}

H3 {
  font-family: 'Urbani-UltraBlack';
}

H4 {
  font-family: 'Urbani-UltraBlack';
}

P {font-family: 'Urbani-Light';
}

Use this new code

@font-face {
  font-family: 'Urbani-UltraBlack';
  src: url('https://static1.squarespace.com/static/5ff8758cdd4cdc650b26228b/t/6012cd06753c2b683316bc9a/1611844870999/Urbani-UltraBlack.otf'); /* IE9 Compat Modes */
  src: url('https://static1.squarespace.com/static/5ff8758cdd4cdc650b26228b/t/60421d41bbcd3b44563faf42/1614945601394/Urbani-UltraBlack.woff2') format('woff2'), /* Super Modern Browsers */
       url('https://static1.squarespace.com/static/5ff8758cdd4cdc650b26228b/t/60421d373f35b3501dbc78a3/1614945591555/Urbani-UltraBlack.woff') format('woff'); /* Pretty Modern Browsers */
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Urbani-UltraBlack'
}