How to set the width and length of the customize liquid

Shopify Discussion
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i think it is too big

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@mgjuyg , could you please share a screenshot or URL of your store?

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mgjuyg_0-1703506937162.png
mgjuyg_0-1703506937162.png268×194 1.04 KB

hi， this is the liquid, it is too close to the both edge, how can i leave some space for it?