html5/css3 DIV on DIVs layout issue - html

Question

i have div area which is devided in to 4 equal parts, like the one atached.
now i need another div to be placed at the bottom area as an overlay to the above div. Imagine it like a text scroll area on the bottom side of the TV and the TV screen is constructed by 4 divs.
I am able to create the 5 divs. now the issue is that the 5th div(scroll area) is not going above the bottom edge of the 2 lower divs (3 and 4). I also had put z-index also but failed
can anybody share a sample for styling this.

Answer 1

You can solve it this way:
HTML:
<div class="area"></div>
<div class="area"></div>
<div class="area"></div>
<div class="area"></div>
<div class="overlay"></div>​
CSS:
.area{
float: left;
width: 49%;
height: 300px;
border: 1px solid black;
}
.overlay{
width: 200px;
height: 100px;
background-color: blue;
clear: both;
position: absolute;
bottom: 30px;
margin: -100px;
left: 50%;
}
​
Please note that I have used hard coded example values. The actual values depends on which context the markup is in.

Answer 2

Without your code it's hard to figure what's not working.
If I understand what you want this is what I would have done:
<div class="container">
<div class="block1"></div>
<div class="block2"></div>
<div class="block3"></div>
<div class="block4"></div>
<div class="overlay"></div>
</div>
css:
.container {
position: relative;
width: 600px; /* use the size you want */
height: 400px;
}
.container div {
position: absolute;
width: 50%;
height: 50%;
}
.container .block1 { top: 0; left: 0; background: pink; }
.container .block2 { top: 50%; left: 0; background: red; }
.container .block3 { top: 0; left: 50%; background: green; }
.container .block4 { top: 50%; left: 50%; background: blue; }
.container .overlay {
position: absolute;
width: 80%;
height: 100px;
left: 10%;
bottom: 30px; /* distance from the bottom */
z-index: 1;
background: yellow;
}