Variants help

Point in right direction please. Designed all my pages for main size then created a variant for mobile. However when I start resizing text etc in the variant it also changes the sizes in the main. Where am I going wrong.
Thanks in advance for any help.

This catches me out on a regular basis.

Edit the text to how you like it, then use the Style drop down menu to 'Update Style In This Variant', or create a new style and update in the variant.

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