# How to use

```pug
h1(class='heading heading_size_h1') Heading One
h1(class='heading heading_size_h2') Heading Two
h1(class='heading heading_size_h3') Heading Three
h1(class='heading heading_size_h4') Heading Four
h1(class='heading heading_size_h5') Heading Five
h1(class='heading heading_size_h6') Heading Six
```
