1. Go to your Store Control Panel → Design.
  2. Scroll down to the Сreate Your CSS Theme block.
  3. Click Create Theme:

If this is your first custom CSS theme, click Add New CSS Theme:

If you already have a custom theme with CSS codes, add the new codes to that theme. Paste the new codes under the old ones.

Click Activate to enable the new theme:

Click Save in the top right or press Ctrl + S.

TIP: Only one CSS theme can be active at a time, so all codes you want to use should be included in one theme.

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