1. A CSS box madel is basically an outline of the website decided on where certian parts will be at for example content section would be below a header type section above.
2. Margin is the spacing of the CSS Box model and its boders on the website and padding is spacing done on the inside of the Box in between text for examples.
3.The total height and width of an element is determined by the fixed size or by changing it through commands such as font-family which by the set pxs can change an text's size.
4. The property will space its content height by 25px and its width by 50px making a new set positon of conent.