> For the complete documentation index, see [llms.txt](https://learn.us-themes.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.us-themes.com/week-4/day-19.md).

# Day 19

### Custom PHP Code (Child Theme) (1h)

* Add a custom HTML code, for example, a \<script> tag with any JavaScript, right before the DIV with the "l-canvas" class using the PHP code inside the functions.php of the Impreza Child theme.
  * Here is [the screenshot](https://prnt.sc/RDjUZZmU3eLw) for more info.
  * This code should be shown on the whole site
  * Please see the us-core/templates/header.php file, that is where this DIV is.
  * Bonus difficulty: make this code show only on a particular post category archive page

### Send the report

Send the summary and link to the results to the curator.