Index: /views/mods/mod_fuellmenge/produkt_edit_sidebar.phtml
===================================================================
--- /views/mods/mod_fuellmenge/produkt_edit_sidebar.phtml	(revision 7657)
+++ /views/mods/mod_fuellmenge/produkt_edit_sidebar.phtml	(revision 7658)
@@ -45,5 +45,5 @@
 			<div class="col-sm-6 d-flex align-items_center justify-content_space-between">
 				
-				<input type="text" name="fmenge" value="<?php echo $fmenge; ?>" class="fmenge" />
+				<input class="form-control input-sm" type="text" name="fmenge" value="<?php echo $fmenge; ?>" class="fmenge" />
 				
 				<select name="feinheit" class="unit">
@@ -61,5 +61,5 @@
 			<div class="col-sm-6 d-flex align-items_center justify-content_space-between">
 
-				<input type="text" name="wpsg_mod_fuellmenge_referencevalue" value="<?php echo $referencevalue; ?>" class="referencevalue fmenge_details fmenge_details_1" />
+				<input class="form-control input-sm" type="text" name="wpsg_mod_fuellmenge_referencevalue" value="<?php echo $referencevalue; ?>" class="referencevalue fmenge_details fmenge_details_1" />
 
 				<select name="referenceunit" class="unit fmenge_details fmenge_details_1">
@@ -71,5 +71,5 @@
 				<span class="equal conversion" style="display:none;">≙</span>
 
-				<input type="text" name="wpsg_mod_fuellmenge_conversionvalue" value="<?php echo $conversionvalue; ?>" class="conversion conversionvalue" />
+				<input class="conversion conversionvalue" class="form-control input-sm" type="text" name="wpsg_mod_fuellmenge_conversionvalue" value="<?php echo $conversionvalue; ?>"/>
 				
 				<span class="unit conversion conversion_unit" style="display:none;"></span>