E-commerce, refers to the buying and selling of goods or services using the internet, and the transfer of money and data to execute these transactions.
To make your e-commerce website successful keep the design as clutter-free as possible. There are probably many elements that you would like to put on every page, but think about what are most necessary to convince the customer to make a purchase.
List all of your elements and decide which ones are vital to making a sale. Prioritize what information is most important to least important. For example, on a product page, the image of the product, its title, description, availability, prices, etc. are obviously important. Keep this in mind throughout all pages of the website and avoid overwhelming visitors with too much information within a small area.