Stretch website width and height to android screen width and height

Question

Is there any HTML/CSS/JS code for this?

Answer 1

*
{
padding: 0;
margin: 0;
}

body
{
width: 100%;
height: 100%;
}

Answer 2

Padding and margin removes the default padding and margin from everyting so your webpage is truly 100% wide.

Answer 3

Does this prevent the user from zooming in and out of the site?