OK,
I got this thanks to JA Mero !
I opened templates/ja_mitius/tpls/blocks/mainbody-content-left.php
and changed :
$layout_config = json_decode (‘{
“two_sidebars”: {
“default” : [ “span8” , “span4” , “span4” , “span4” ],
“wide” : [],
“xtablet” : [ “span8” , “span4” , “span4” , “span4 spanfirst” ],
“tablet” : [ “span12” , “span12 spanfirst” , “span6” , “span6” ]
},
to :
$layout_config = json_decode (‘{
“two_sidebars”: {
“default” : [ “span6” , “span6” , “span3” , “span3” ],
“wide” : [],
“xtablet” : [ “span8” , “span4” , “span4” , “span4” ],
“tablet” : [ “span12” , “span12 spanfirst” , “span6” , “span6” ]
},
Hope this will help.
Best regards,
David aka Shapes