Scroll page parallax when I click on navigation menu (Parallax Scrolling) - html

Question

Sorry If my tone is not good,
I am using this code in a web page.
HTML:
<a class="second" href="#nav1">Home</a>
<a class="second" href="#nav2">About</a>
<a class="second" href="#nav3">Contact</a>
<section id="nav1" data-speed="4" data-type="background">
<article>Big Tech Ideas Page3</article>
</section>
<section id="nav2" data-speed="4" data-type="background">
<article>Big Tech Ideas Page3</article>
</section>
<section id="nav3" data-speed="4" data-type="background">
<article>Big Tech Ideas Page3</article>
</section>
Question: my question is this, When I click on link "About" of "Contact", page should scroll slowly slowly .
NOTE:(Here I mean Parallax Scrolling).
suggest me css for this.

Answer 1

You're gonna have to modify your HTML. I passed across a solution some time ago but I don't remember where it is. Anyway here's how I'd modify your code:
HTML:
<a id="nav1"></a>
<a id="nav2"></a>
<a id="nav3"></a>
<header class="nav">
<nav>
<ul>
<li>Home </li>
<li>About</li>
<li>Contact</li>
</ul>
</nav>
</header>
<section id="main">
<article class="article" id="nav1">
<p>Big Tech Ideas Page3</p>
</article>
<article class="article" id="nav2">
<p>Big Tech Ideas Page3</p>
</article>
<article class="article" id="contacto">
<p>Big Tech Ideas Page3</p>
</article>
</section>
CSS:
a[id= "nav1"]:target ~ #main article.article {
-webkit-transform: translateY( 0px);
transform: translateY( 0px );
}
a[id= "nav2"]:target ~ #main article.article {
-webkit-transform: translateY( -500px );
transform: translateY( -500px );
}
a[id= "nav3"]:target ~ #main article.article {
-webkit-transform: translateY( -1000px );
transform: translateY( -1000px );
}
header {
position: fixed;
z-index: 10;
}
.article {
width: 100%;
height: 600px;
z-index:0;
-webkit-transform: translateZ( 0 );
transform: translateZ( 0 );
-webkit-transition: -webkit-transform 2s ease-in-out;
transition: transform 2s ease-in-out;
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
}
.article p {
font-family: sans-serif;
font-size: 86px;
font-size: 5rem;
position:relative;
line-height: 300px;
text-align: center;
margin: 0;
}
Let me know if it works.
Working demo fiddle: http://jsfiddle.net/Fraximus/CFSEK/1/

Answer 2

Is there any way to produce reverse-parallax scrolling?
i.e. On scrolling the content down, I want the respective title in the left pane to get highlighted accordingly.