Getting rid of search icon in header menu

I have tried many different CSS codes found on the forums to remove the search icon on my header menu. However, none have worked. I was hoping someone here has a different CSS code I can try to get rid of the search icon. Please let me know.

Hello there,

I hope you are doing well today.

Please remove the previous CSSrelated to removing the search icon then go to Appearance > Customize > Additional CSS and paste this CSS there.

/*Remove Search Icon*/ {
    display: none;

Best Regards,