perl -i.bak -ne 'print unless 16 .. 25' *.html ##

##

use XML::Twig;

my $twig = XML::Twig->new(
    twig_handlers => {
        div => sub { 
            my $class = $_->att("class") // "";
            $_->delete if $class eq "topsearchbar";
        },
    }
);

$twig->parse_html(\*DATA)->print;

__END__
Each of the unwanted divs at this point
starts
with
  
    and ends with
  . 
They are on lines 16-25 of the file.

##

##

Each of the unwanted divs at this point
starts
with
  . 
They are on lines 16-25 of the file.