:nth-letter()

# I'm an H1 Headline

## I'm an H2 Headline

### I'm an H3 Headline

#### I'm an H4 Headline

##### I'm an H5 Headline

###### I'm an H6 Headline

:nth-word()

# I'm an H1 Headline With Seven Words

## I'm an H2 Headline With Seven Words

### I'm an H3 Headline With Seven Words

#### I'm an H4 Headline With Seven Words

##### I'm an H5 Headline With Seven Words

###### I'm an H6 Headline With Seven Words