Solved.tips

[html] <form method="GET" action="https://duckduckgo.com/"> Insert your search terms here:&nbsp;&nbsp;&nbsp; <input type="text" name="q" size="60"> <input type="hidden" name="sites" value="example.com"> <input type="submit" value="Search"> </form> [/html] or https://duckduckgo.com/search_box which seems to require JavaScript