# Block

Blocks placed on a grid of columns, with spans, nesting, and arrows.

## Examples

The playground samples for this type, rendered by Ondine when the documentation builds.

### Example 1

```mermaid
block
columns 1
  db(("DB"))
  blockArrowId6<["&nbsp;&nbsp;&nbsp;"]>(down)
  block:ID
    A
    B["A wide one in the middle"]
    C
  end
  space
  D
  ID --> D
  C --> D
  style B fill:#969,stroke:#333,stroke-width:4px

```

### Example 2

```mermaid
block
  blockArrowId<["Label"]>(right)
  blockArrowId2<["Label"]>(left)
  blockArrowId3<["Label"]>(up)
  blockArrowId4<["Label"]>(down)
  blockArrowId5<["Label"]>(x)
  blockArrowId6<["Label"]>(y)
  blockArrowId7<["Label"]>(x, down)

```

### Example 3

```mermaid
block
columns 1
  db(("DB"))
  blockArrowId6<["&nbsp;&nbsp;&nbsp;"]>(down)
  block:ID
    A
    B["A wide one in the middle"]
    C
  end
  space
  D
  ID --> D
  C --> D
  style B fill:#939,stroke:#333,stroke-width:4px

```

### Example 4

```mermaid
block
  id1 space id2
  id1("Start")-->id2("Stop")
  style id1 fill:#636,stroke:#333,stroke-width:4px
  style id2 fill:#bbf,stroke:#f66,stroke-width:2px,color:#fff,stroke-dasharray: 5 5

```

### Example 5

```mermaid
block
  columns 3
  Frontend blockArrowId6<[" "]>(right) Backend
  space:2 down<[" "]>(down)
  Disk left<[" "]>(left) Database[("Database")]

  classDef front fill:#696,stroke:#333;
  classDef back fill:#969,stroke:#333;
  class Frontend front
  class Backend,Database back

```

### Example 6

```mermaid
block
  columns 3
  Start(("Start")) space:2
  down<[" "]>(down) space:2
  Decision{{"Make Decision"}} right<["Yes"]>(right) Process1["Process A"]
  downAgain<["No"]>(down) space r3<["Done"]>(down)
  Process2["Process B"] r2<["Done"]>(right) End(("End"))

  style Start fill:#969;
  style End fill:#696;

```