.conversejs { livechat-converse-muc-task { &.livechat-drag-bottom-half .task-line { border-bottom: 4px solid blue; } &.livechat-drag-top-half .task-line { border-top: 4px solid blue; } } livechat-converse-muc-task-list { &.livechat-drag-bottom-half .task-list-line { border-bottom: 4px solid blue; } &.livechat-drag-top-half .task-list-line { border-top: 4px solid blue; } } }