.box_box_main.active .box_left_column_section{opacity:1;visibility:visible}.tabbingsection .box_left_column_section{visibility:hidden;opacity:0;transition:all ease-in-out .5s}.box_box_main:hover .box_left_column_section{visibility:visible;opacity:1}.box_box_main:first-child .box_left_column_section{visibility:visible;opacity:1}