How can I design the website look like this?

Both PowerPoint and Canva have text editing. In PowePoint you would "Insert" a "Textbox" on top of an image. Canva has the same functionality - just not sure what it's called. You would do the text in PowerPoint or Canva. Then you simply save as jpeg or png format and upload as a photo. You complete the image in PowerPoint or Canva as you want it to look before you save it. Free Toast Host lets you include text above, under or beside the photo.