Background transition effect

Hi,

I need some help. On CSSNectar I found a website with a very nice background transition effect when scrolling. I can't figure out how it works. Could you help me to do the same on my own website? Thanks

Transition effects are animation options within a presentation. ... But when you start the actual slideshow, transitions will dictate how the presentation progresses from one slide to the next.

In CSS, there is so many transitions effect that helps to make our web site more attractive and responsive.
The transition effect will start when the CSS property changes its value.
There are many properties in transitions like transition-delay, transition-duration, etc.
There is one effect that is used to make our website's background content is moved with a different speed than the foreground content it is called the Parallax effect.

See this demo: https://www.w3schools.com/howto/howto_css_parallax.asp

Transition effects are animation options within a presentation. ... But when you start the actual slideshow, transitions will dictate how the presentation progresses from one slide to the next.

Transition effects are animation options within a presentation. You cannot see the transitions in action from the static presentation view of slides. ... Transitions can be used to set specific time intervals before moving forward in the show, or can be used to make slides change with the click of a mouse button.

In this above example, both background and padding will transition, due to the value “all” specified for the transition-property portion of the shorthand. For the most part, the order of the values does not matter — unless a delay is specified. If you specify a delay, you must first specify a duration.

Transition effects are animation options within a presentation. You cannot see the transitions in action from the static presentation view of slides. ... Transitions can be used to set specific time intervals before moving forward in the show, or can be used to make slides change with the click of a mouse button.

ease - specifies a transition effect with a slow start, then fast, then end slowly (this is default)
linear - specifies a transition effect with the same speed from start to end.
ease-in - specifies a transition effect with a slow start.