Show multi-level blocks in concatenated form on single line

I hope to show multi-level blocks in one-line block; ‘‘multi-level blocks’’ refer to short, individual blocks.
For example,
The following blocks,

  • Dicotyledoneae
    • Magnoliales
      • Annonaceae
        • The Annonaceae are a family of flowering plants consisting of trees, shrubs, or rarely lianas commonly known as the custard apple family or soursop family.
      • Himantandraceae
        • Himantandraceae is a family of flowering plants recognized by the APG II system of 2003, assigned to the order Magnoliales in the clade magnoliids.
      • Eupomatiaceae
        • Eupomatia is a genus of three species of plants in the ancient family Eupomatiaceae, and is the sole genus in the family.

could be displayed as follows.

  • Dicotyledoneae > Magnoliales > Annonaceae
    • The Annonaceae are a family of flowering plants consisting of trees, shrubs, or rarely lianas commonly known as the custard apple family or soursop family.
  • Dicotyledoneae > Magnoliales > Himantandraceae
    • Himantandraceae is a family of flowering plants recognized by the APG II system of 2003, assigned to the order Magnoliales in the clade magnoliids.
  • Dicotyledoneae > Magnoliales > Eupomatiaceae
    • Eupomatia is a genus of three species of plants in the ancient family Eupomatiaceae, and is the sole genus in the family.

When the block is in edit mode, it displays the upper one. When the block is not in edit mode, it displays in the lower one.

Clicking e.g. on the last bullet already shows this:

Thanks. But it only supports one item and requires clicking. Additionally, it collapses only one view upon click. I mean the collapsed blocks should stay on its page rather than dig into blocks.