)Explain viewport in detail

In web development, a viewport is the area of the web page that is visible to the user on their device's screen. It is the portion of the web page that is displayed within the browser window or frame.

As mobile devices have varying screen sizes, it is important to define the viewport to ensure that the web page is displayed correctly on all devices. To achieve this, a meta viewport tag is added to the head section of the HTML document.

The meta viewport tag tells the browser how to scale and size the content to fit the viewport. It can include properties such as width, height, initial-scale, minimum-scale, maximum-scale, and user-scalable.

For example, the following meta viewport tag sets the width of the viewport to the width of the device and sets the initial scale to 1:

<meta name="viewport" content="width=device-width, initial-scale=1">

This will ensure that the web page is displayed at the correct size and scale on all devices, and that users do not have to zoom in or out to view the content.

In summary, the viewport is the visible area of the web page on a user's device, and the meta viewport tag is used to define how the content should be scaled and sized to fit the viewport.