A website consists of many files: text content, code, stylesheets, media content, and so on. When you're building a website, you need to assemble these files into a sensible structure on your local computer, make sure they can talk to one another, and get all your content looking right before you eventually upload them to a server. Dealing with files discusses some issues you should be aware of so you can set up a sensible file structure for your website....content="width=device-width" /> <title>My test page</title> </head> <body> <img...that inserts an image into the page. We need to tell the HTML where...