1. Login to administrator site, and click Pages.
2. Search for keyword of the page.
3. For example, to change the word here.
Navigate to the respective part, and click edit icon.
4. Edit text.
5. After that, click Apply and click Save.
If the item not found, it may be a background and here are the steps to change.
1. Click the settings icon for the row.
2. Click STYLE.
3. Scroll down and change image.
4. After that, click Apply and click Save.