direction:ltr, narrow
margin-left and margin-right auto
margin-left auto
margin-right auto
direction:ltr, wide
margin-left and margin-right auto
margin-left auto
margin-right auto
direction:rtl, narrow
margin-left and margin-right auto
margin-left auto
margin-right auto
direction:rtl, wide
margin-left and margin-right auto
margin-left auto
margin-right auto