The fit quiz button's styling lives in your Shopify theme editor — inside the SmartSize Fit quiz app embed — so the button always matches the rest of your storefront. In SmartSize, open Settings → Fit quiz button → Styling for an overview of everything you can change, then click Customize in theme editor to jump straight to the right place.
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Change the button text
In the theme editor's Button settings, the Button text field controls the label shoppers see — FIND MY SIZE by default. This is your store-wide default label. If you sell in more than one language, you can translate it with Shopify's free Translate & Adapt app.
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Set the recommendation message
Recommendation text is what the button shows once a shopper has completed the quiz. The [[recommendedSize]] placeholder is replaced with their result — so "Your size is [[recommendedSize]]" becomes "Your size is M". Reword the message however you like, but keep the placeholder so the size always appears.
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Text link or full button
The Style setting switches between two looks. Link shows the label as a simple text link that blends in with the rest of your product page. Button turns it into a full button that stands out next to your size selector — pair it with a light Text color so the label pops against the background. You can also add a small hanger, ruler, or arrows icon with the Icon dropdown.
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Pick your colors and round the corners
Use Background color to match the button to your brand — the storefront preview updates live as you pick. The Corner radius slider rounds the button corners: set it to 0 for sharp edges, or push it all the way up for a pill shape.
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Adjust the spacing
The Margin sliders add outer spacing around the button — top, right, bottom, and left — which is handy when it sits too close to neighboring elements, like the size chart button in this example, and needs a little breathing room.
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💡 Tip: don't forget to click Save in the theme editor. These settings are your store-wide defaults — if you've placed the button with an app block, you can also override the styling on that page by setting Button styling to Customize on this page.