> ## Documentation Index > Fetch the complete documentation index at: https://docs.aftersell.com/llms.txt > Use this file to discover all available pages before exploring further. # Cart allows left/right scrolling on mobile > This article explains how to fix a bug that allows Upcart contents to move left and right. # Overview On certain mobile devices, users might be able to scroll the Upcart horizontally, exposing an unintended white space on the right. This usually occurs when a child element within the cart exceeds the viewport width or disrupts the layout’s natural constraints, resulting in horizontal overflow. Mobile Upcart cart drawer scrolling sideways to reveal unwanted white space on the right *** ## **CSS Solution** To prevent this behavior and keep the cart constrained to the viewport width, simply copy the code below and add it to the following directory: In the Cart Editor, open **Settings** and select the **Custom CSS** tab. Settings is a row of tabs — if you don't see Custom CSS, it's behind **More settings**. ``` .upcart-cart-body { overflow-x: hidden !important; } ```