You can add a heading by adding a hash tag in the beginning of the line. By adding more, you can have sub headings.

# Heading 1
## Heading 2
### Heading 3
#### Heading 4
##### Heading 5
```
# Heading 1
## Heading 2
### Heading 3
#### Heading 4
##### Heading 5
```

You can also add style to headings.

# ''Italic Heading''
```# ''Italic Heading''```