add item class for content slider
Revert "add item class for content slider"

This reverts commit 2c58a604cbb1d4e7cfc10efb2db8e73e2f9035e5.
Revert "Revert "add item class for content slider""

This reverts commit 2ce6c3f96a9d54eda25407ad8fd6e5a5277a19dd.