Hello @Nilson_1
Thanks for the screenshot! It looks like you’re viewing your Shopify store on mobile and want to add borders (padding/margins) to the left and right sides of the whole layout, but currently the content stretches edge to edge.
This is a common issue, especially in themes like Dawn or others that are optimized for full-width mobile displays.
Solution: Add Side Padding to the Entire Page on Mobile
Here’s how to add left and right borders (via padding or margin) on mobile screens:
Step 1: Go to your Shopify theme code editor
. From your Shopify admin, go to Online Store > Themes
. Click Actions > Edit code
Step 2: Add Custom CSS
You can add this CSS either in your base.css or theme.css (depending on your theme), usually located in:
. Assets > base.css or
. Assets > theme.css.liquid
Scroll to the bottom of the file and add the following code:
@media screen and (max-width: 749px) {
body {
padding-left: 12px;
padding-right: 12px;
box-sizing: border-box;
}
}
You can adjust 12px to your desired spacing (e.g., 16px or 20px for wider padding).
Want True Borders Instead of Padding?
If you want a visible line border, you can do this instead:
@media screen and (max-width: 749px) {
body {
border-left: 1px solid #ccc;
border-right: 1px solid #ccc;
padding-left: 12px;
padding-right: 12px;
box-sizing: border-box;
}
}
Replace #ccc with your desired border color.
Final Tips:
. Clear your theme cache or use incognito mode after saving changes.
. If you’re using Dawn, the padding might need to go on .page-width instead of body. Let me know if you’re using a different theme.
Thank you 