required mark should be displayed in the middle of first line, not whole lines.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@45792 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_km/SkinTemplateItem/portal_skins/erp5_km_theme/km_css/km.css.xml

@@ -570,7 +570,7 @@ fieldset.left{\n
 \n
 div.required label{\n
   background-image:url("km_img/required_mark.png");\n
-  background-position:left center;\n
+  background-position:0 0.5em;\n
   background-repeat:no-repeat;\n
   padding-left: 10px;\n
 }\n

bt5/erp5_km/bt/revision

-1792
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+1793
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