La fonction de suggestion automatique permet d'affiner rapidement votre recherche en suggérant des correspondances possibles au fur et à mesure de la frappe.
First of all you need to check the .CSS file of your page. Press ctrl+U on the published page then find the .css file where you added style. Open the .css file and find if the style you added is exist. If it's bot you have to publish your page again to regenerate the .css file.
Sometimes it helps. If its not, please create the new page again fom that template and check if everything is OK.