Remove the <br>'s, replace $error .= with push @error, and: 
use CGI qw/:standard *table/;
# ...
print start_table;
print Tr(td([splice @error, 0, 3])) while @error;
print end_table;

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In reply to Re: Separating by threes by ysth
in thread Separating by threes by Anonymous Monk

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