p5.js-web-editor/client/styles/components/_authentication-error.scss

.authentication-error {
  @extend %modal; 
}

.authentication-error__header {
  padding: #{20 / $base-font-size}rem;
}

.authentication-error__copy {
  padding: #{20 / $base-font-size}rem;
  padding-top: 0;
  padding-bottom: #{60 / $base-font-size}rem;
}