diff --git a/htdocs/accountancy/bookkeeping/balance.php b/htdocs/accountancy/bookkeeping/balance.php
index 10bce8bf896..24d9d74a645 100644
--- a/htdocs/accountancy/bookkeeping/balance.php
+++ b/htdocs/accountancy/bookkeeping/balance.php
@@ -417,7 +417,7 @@ if ($action != 'export_csv') {
 
 				// Show first line of a break
 				print '<tr class="trforbreak">';
-				print '<td colspan="'.($colspan+1).'" style="font-weight:bold; border-bottom: 1pt solid black;">'.$line->numero_compte.($root_account_description ? ' - '.$root_account_description : '').'</td>';
+				print '<td colspan="'.($colspan+1).'" class="groupby">'.$line->numero_compte.($root_account_description ? ' - '.$root_account_description : '').'</td>';
 				print '</tr>';
 
 				$displayed_account = $root_account_number;
diff --git a/htdocs/accountancy/bookkeeping/listbyaccount.php b/htdocs/accountancy/bookkeeping/listbyaccount.php
index 22ba2d3f0b1..a9276c10578 100644
--- a/htdocs/accountancy/bookkeeping/listbyaccount.php
+++ b/htdocs/accountancy/bookkeeping/listbyaccount.php
@@ -712,7 +712,7 @@ while ($i < min($num, $limit)) {
 
 		// Show the break account
 		print "<tr>";
-		print '<td colspan="'.($totalarray['nbfield'] ? $totalarray['nbfield'] : 10).'" style="font-weight:bold; border-bottom: 1pt solid black;">';
+		print '<td colspan="'.($totalarray['nbfield'] ? $totalarray['nbfield'] : 10).'" class="groupby">';
 		if ($line->numero_compte != "" && $line->numero_compte != '-1') {
 			print length_accountg($line->numero_compte).' : '.$object->get_compte_desc($line->numero_compte);
 		} else {
diff --git a/htdocs/accountancy/bookkeeping/listbysubaccount.php b/htdocs/accountancy/bookkeeping/listbysubaccount.php
index 101a8897bb5..97cddacfefc 100644
--- a/htdocs/accountancy/bookkeeping/listbysubaccount.php
+++ b/htdocs/accountancy/bookkeeping/listbysubaccount.php
@@ -714,7 +714,7 @@ while ($i < min($num, $limit)) {
 
 		// Show the break account
 		print "<tr>";
-		print '<td colspan="'.($totalarray['nbfield'] ? $totalarray['nbfield'] : 10).'" style="font-weight:bold; border-bottom: 1pt solid black;">';
+		print '<td colspan="'.($totalarray['nbfield'] ? $totalarray['nbfield'] : 10).'" class="groupby">';
 		if ($line->subledger_account != "" && $line->subledger_account != '-1') {
 			print $line->subledger_label.' : '.length_accounta($line->subledger_account);
 		} else {
diff --git a/htdocs/theme/eldy/global.inc.php b/htdocs/theme/eldy/global.inc.php
index e056431f7ea..918fe88a62c 100644
--- a/htdocs/theme/eldy/global.inc.php
+++ b/htdocs/theme/eldy/global.inc.php
@@ -135,10 +135,14 @@ a.tab { font-weight: 500 !important; }
 a:link, a:visited, a:hover, a:active, .classlink { color: var(--colortextlink); text-decoration: none;  }
 a:hover { text-decoration: underline; color: var(--colortextlink); }
 a.commonlink { color: var(--colortextlink) !important; text-decoration: none; }
+
 th.liste_titre a div div:hover, th.liste_titre_sel a div div:hover { text-decoration: underline; }
 tr.liste_titre th.liste_titre_sel:not(.maxwidthsearch), tr.liste_titre td.liste_titre_sel:not(.maxwidthsearch),
 tr.liste_titre th.liste_titre:not(.maxwidthsearch), tr.liste_titre td.liste_titre:not(.maxwidthsearch) { opacity: 0.8; }
 /* th.liste_titre_sel a, th.liste_titre a, td.liste_titre_sel a, td.liste_titre a { color: #766; } */
+th.groupby, td.groupby {
+	font-weight:bold; border-bottom: 1pt solid black !important;
+}
 
 input {
 	font-size: unset;
diff --git a/htdocs/theme/md/style.css.php b/htdocs/theme/md/style.css.php
index 570a4eaa6b3..2d64e3f26e5 100644
--- a/htdocs/theme/md/style.css.php
+++ b/htdocs/theme/md/style.css.php
@@ -4022,6 +4022,10 @@ input.liste_titre {
 	white-space: normal;
 }
 
+th.groupby, td.groupby {
+	font-weight:bold; border-bottom: 1pt solid black !important;
+}
+
 
 tr.liste_sub_total, tr.liste_sub_total td {
 	border-bottom: 2px solid #aaa;