La fonction de suggestion automatique permet d'affiner rapidement votre recherche en suggérant des correspondances possibles au fur et à mesure de la frappe.
Either your form willl be embedded on an external page (in which case your CSS should be inside the embed code), or on a HubSpot landing page: in that case, you'll want to add a stylesheet to the page (or add the code to the primary CSS if you want the change to apply to all landing pages).