How to create two columns of text so the text flow wraps

Hello, I am trying to set a text block in SS7.1 (fluid engine) to have columns and dynamically flow the text from one column to the next so that a large text block is easy to read. I referenced this tutorial How to create a multi-column text block in Squarespace, without using separate blocks • Beatriz Caraballo but it isn't working for me.

I suspect that it may have something to do with fluid engine and I am not targeting the block correctly, as if I reference this block in CSS and try to customise, nothing changes. I know I am doing something wrong - can anyone confirm that the referenced article should be the correct way for 7.1 FE or have things changed?

The section I am trying to adjust is just a blank section with a text block in it. 

CSS from article for reference:

/*MULTIPLE COLUMNS ON SCREENS LARGER THAN PHONES*/
@media screen and (min-width: 640px) {
  #block-XXXXXXXXXXXXetc {
    column-count: 2;
    column-gap: 60px;
  }
}

Thank you.

2 minutes ago, Alasana said:

Hello, I am trying to set a text block in SS7.1 (fluid engine) to have columns and dynamically flow the text from one column to the next so that a large text block is easy to read. I referenced this tutorial How to create a multi-column text block in Squarespace, without using separate blocks • Beatriz Caraballo but it isn't working for me.

I suspect that it may have something to do with fluid engine and I am not targeting the block correctly, as if I reference this block in CSS and try to customise, nothing changes. I know I am doing something wrong - can anyone confirm that the referenced article should be the correct way for 7.1 FE or have things changed?

The section I am trying to adjust is just a blank section with a text block in it. 

CSS from article for reference:

/*MULTIPLE COLUMNS ON SCREENS LARGER THAN PHONES*/
@media screen and (min-width: 640px) {
  #block-XXXXXXXXXXXXetc {
    column-count: 2;
    column-gap: 60px;
  }
}

Thank you.

Can you share your website URL? And tell me where do you want apply this?

Thanks for your help. I set it as a test page for you to review.

https://www.alasana.com/test

block is :#block-319fe46991029a14bcac