A simple div layout using position - html

Question

Let's see if I can explain this correctly. I want a header, always visible AND content AND a footer that is hidden behind the content, that becomes visible when scrolled to the footer. Here's what I have so far...
#container {
height:100%;
width:100%;
position:relative;
}
#top {
height:25vh;
width:100%;
background-color:red;
position:fixed;
top:0;
}
#content {
height:120vh;
width:100%;
background-color:green;
position:relative;
}
#bottom {
height:35vh;
width:100%;
background-color:blue;
position:fixed;
bottom:0;
}
<div id="container">
<div id="top">
</div>
<div id="content">
</div>
<div id="bottom">
</div>
</div>
What this code currently does: Header is hidden behind content and footer is always visible overlapping content.
Here is the current test page... http://next-factor.com/test-layout.php
Much help is greatly appreciated. Thank You!

Answer 1

give a z-index in #top
#top {
background-color: red;
height: 25vh;
position: fixed;
top: 0;
width: 100%;
z-index: 999;
}
it will make header visible.
and remove position:fixed from #bottom
#bottom {
background-color: blue;
bottom: 0;
height: 35vh;
width: 100%;
}
hope this will solve your problem
here is the working example http://jsfiddle.net/a3ru9d4d/
in this example I have added padding top in the container so that content inside the container will not hide behind the header.

Answer 2

I think you want something like this:-
*{margin:0;padding:0}
#container {
height:100%;
width:100%;
position:relative;
}
#top {
height:25vh;
width:100%;
background-color:red;
position:fixed;
top:0;
z-index: 1;
}
#content {
height:120vh;
width:100%;
background-color:green;
position:relative;
}
#bottom {
height:35vh;
width:100%;
position:relative;
z-index:-2;
background-color:#31353a;
}
<div id="top">
</div>
<div id="content">
</div>
<div id="bottom">
Footer
</div>
</div>
I hope it will helps you.

Answer 3

Take a look at this. I've introduced two new CSS definitions that achieve what I think you want.
https://jsfiddle.net/b8my8h5j/
I added z-index definitions. The higher the index, the higher it is in a non-static positioning stack. the content header has 30, so it appears above 20 for the content, but the footer has 10, so t's always at the back.
I added a margin-bottom to the content so that there's space for you to scroll down and have the footer be completely visible.
Update:
https://jsfiddle.net/b8my8h5j/1/
Also cleared padding/margin on the body and html tags so that the blocks fit together snugly.
Added a margin-top to the content so that the top of the green box is visible.

Answer 4

I think this produces what you want: z-indexes on all three, and making room at the bottom of content for the footer to show completely when you scroll to the end of the page
#container {
height:100%;
width:100%;
position:relative;
}
#top {
height: 25vh;
width: 100%;
background-color: red;
position: fixed;
top: 0;
z-index: 3;
}
#content {
height: 120vh;
width: 100%;
background-color: green;
position: relative;
margin-bottom: 33vh;
z-index: 2;
}
#bottom {
height: 35vh;
width: 100%;
background-color: blue;
position: fixed;
bottom: 0;
z-index: 1;
}
<div id="container">
<div id="top">
</div>
<div id="content">
</div>
<div id="bottom">
</div>
</div>