CSS3 appearing animation that can be used with modal boxes, tool tips, image galleries etc. This animation basically uses the animation and keyframes properties to animate the box. The box is initially hidden by setting its opacity to 0, and it’s scaled to twice of its original dimensions by using the scale transform property. After 1 second, the box is restored to its original dimenstions and 1 opacity which makes it look like it’s coming from the outside world into the screen.Pretty basic stuf…