<meta>: Setting The Viewport
//you should include the following <meta> viewport element in all your web pages
<meta name="viewport" content="width=device-width, initial-scale=1.0">
- HTML5 introduced a method to let web designers take control over the viewport, through the <meta> tag.
- A <meta> viewport element gives the browser instructions on how to control the page's dimensions and scaling.
- The viewport is the user's visible area of a web page, it varies with the device, and will be smaller on a mobile phone than on a computer screen.