Shopify$Shopify(SHOP)$ stock fell considerably off its highs in 2021. The company that helps businesses establish an online selling platform thrived at the pandemic's onset in 2020 when non-essential establishments, including many smaller retailers, were temporarily forced to shut their doors to in-person customers. To stay in business, these brick-and-mortar businesses needed to create websites to help maintain customer relationships and facilitate sales.In 2021, the gradual reversal of that trend created difficult year-over-year comparisons for Shopify. E-commerce as a percentage of overall sales had surged during the initial stages of the pandemic. With business restrictions mostly removed, customers returned to old habits, including more in-perso