How to add a line to mobile menu overlay

Hi, 

I am trying to replicate the line that appears under the main navigation. I would like the line to also appear on the mobile menu overlay. Can anyone help?

Site: https://fox-beagle-3wxe.squarespace.com/

pw: bostock

Thanks!

25 minutes ago, Graphicaljordan said:

Hi, 

I am trying to replicate the line that appears under the main navigation. I would like the line to also appear on the mobile menu overlay. Can anyone help?

Site: https://fox-beagle-3wxe.squarespace.com/

pw: bostock

Thanks!

You can try adding to Home > Design > Custom Css

@media only screen and (max-width: 767px) {
  .header-announcement-bar-wrapper {
    border-bottom: 1px solid #000;
  }
}

My testing

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Amazing thank you! I removed the original line under header I had in the CSS and used this instead which appears across all instances.

Jordan