Dawn Theme: How can I make multirow sections the full width of the page using custom css?

[mycinema]

Hello! I need help with a website that I'm currently working on. I am trying to figure out how to make these multirow sections full width, so that the alternating pink background between the sections stretches the full width of the page.

How can I do this using custom css? I only want it to apply to these particular sections.

The page url is https://mycinemaprojector.myshopify.com/products/mycinema-hd-smart-projector. 

The sections with the pink backgrounds currently look like this:

I want it changed to look like this:

Thank you!

[BSS-Commerce]

Hi @mycinema ,

Please add the following code at the end of the base.css file:

#shopify-section-template--16583056097445__multirow_MVLmVH, #shopify-section-template--16583056097445__multirow_X4dgr6, #shopify-section-template--16583056097445__multirow_PwNTgF{
  background-color: #e7dcdc;
}

Hope it helps @mycinema