Select Banners on the top of your screen
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Select an Announcement Banner or a Product Banner according to your requirement, from the left side of the screen
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On the right side of the screen click on Banner Position
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Click on the Position drop-down menu. Select Custom.
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Choose the Position of the banner with respect to the element at the CSS Selector, from this drop-down menu
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Input the name of the CSS Selector
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Click on Update Position
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Click on Add Banner on the bottom right corner of the screen
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