How to Stack just one Grid Gallery in Mobile (Brine)?

Site URL: https://chihuahua-wrasse-j3yk.squarespace.com/

The default mobile composition for Brine's Grid Gallery blocks is 2 images in each row. I would like there to only be one image so they're stacked on top of each other. I found this tutorial https://christyprice.com/squarespace-tips-tricks/stack-grid-gallery-squarespace-mobile that explains how to make stacked grid galleries default or apply it to all except one, but I would like to only apply it to the grid gallery in my welcome block (the first section of my home page). I've been trying to combine block-specific tutorials with the tutorial above to no avail. 

Password to view site: edstudio

Thank you in advance!

40 minutes ago, edstudio said:

Site URL: https://chihuahua-wrasse-j3yk.squarespace.com/

The default mobile composition for Brine's Grid Gallery blocks is 2 images in each row. I would like there to only be one image so they're stacked on top of each other. I found this tutorial https://christyprice.com/squarespace-tips-tricks/stack-grid-gallery-squarespace-mobile that explains how to make stacked grid galleries default or apply it to all except one, but I would like to only apply it to the grid gallery in my welcome block (the first section of my home page). I've been trying to combine block-specific tutorials with the tutorial above to no avail. 

Password to view site: edstudio

Thank you in advance!

You may want like this

@media only screen and (max-width: 640px)  {
    
 	#block-yui_3_17_2_1_1598664911761_4656  .sqs-gallery-design-grid-slide {
      	width: 100% !important;
      	clear: none !important;
  	}
  	#block-yui_3_17_2_1_1598664911761_4656  .sqs-gallery-design-grid-slide img {
    	width: 100% !important;
    	height: auto !important
  	}
}

@bangank36 that was perfect, thank you!

@bangank36 hi again! The code unfortunately isn't working on Safari. Please let me know if you can look into this! Thank you!!

2 minutes ago, edstudio said:

@bangank36 hi again! Suddenly the code stopped working but I didn't mess with it at all. Please let me know if you can look into this! Thank you!!

It still working at the moment, maybe a cache issue on your ends?

@bangank36 I think that was the issue. Sometimes it's the little things we forget.. thank you!