Search Icon – header with the widgets on the left and right with the logo in the

hi, I have a question about the search field:

I set the header with the widgets on the left and right with the logo in the center, and the menu below, as it is done in this link: https://kriesi.at/documentation/enfold/example-of-widget-left-logo -center-widget-right-menu-below/

now, I would like to insert the “search” icon in the header, on click it opens a popup with the search field. how can I do? could you help me please? if not possible with enfold, could you please suggest me a plugin?

I’m sending you a link that does exactly what I would like: https://daiwafishing.com.au/
here my site:
https://beta-gosmartpress.it/

Thanks in advance