Let us change the output of the search form and other elements to HTML 5.
Install and activate Code Snippets plugin.
Go to Snippets > Add New.
Title: Add support for HTML5 markup
add_theme_support( 'html5', array( 'comment-list', 'comment-form', 'search-form', 'gallery', 'caption' ) );
Set the snippet to run everywhere. Save changes and activate.
Edit your Main Catch All template with Oxygen.
Add an Icon component in a Header Row where you would like to show the magnifying glass search icon.
Give it a padding of say, 10px on all sides to increase the clickable area.
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