consul/ui-v2/app/styles/components/oidc-select/skin.scss

%oidc-select [class$='-oidc-provider']::before {
  width: 22px;
  height: 22px;
  /* this is to prevent resizing in an inline-flex context */
  /* and should probably be moved to the parent*/
  flex: 0 0 auto;
  margin-right: 10px;
}
%oidc-select .auth0-oidc-provider::before {
  @extend %with-logo-auth0-color-icon, %as-pseudo;
}
%oidc-select .okta-oidc-provider::before {
  @extend %with-logo-okta-color-icon, %as-pseudo;
}
%oidc-select .google-oidc-provider::before {
  @extend %with-logo-google-color-icon, %as-pseudo;
}
%oidc-select .microsoft-oidc-provider::before {
  @extend %with-logo-microsoft-color-icon, %as-pseudo;
}