div template with 3 random size columns and bottom - css

Question

I use this template
<style>
#block_center{
position: absolute;
right: 210px;
left: 210px;
text-align: left;
border: 1px solid #000;
overflow: auto;
height: auto;
}
#block_right{
width: 200px;
border: 1px solid #000;
position: relative;
right: 3px;
text-align: left;
float: right;
}
#block_left{
position: relative;
left: 3px;
width: 200px;
border: 1px solid #000;
text-align: left;
float: left;
}
#block_content{
clear: both;
float: none;
width: 100%;
text-align: center;
overflow-y:auto;
overflow-x:auto;
height: auto;
/* margin-bottom: -50px; */
margin: auto;
}
#block_buttom {
background-color: blue;
/* z-index: -10; */
width: 100%;
height: 50px;
clear: both;
}
.clear {
clear:both;
overflow:hidden;
}
</style>
<div id="block_content">
<div id="block_center"> ARTICLE <br> article_ajax_content </div>
<div id="block_right"> Artile links </div>
<div id="block_left"> banner </div>
<div class="clear"></div>
</div>
<div class="clear"></div>
<div id="block_buttom"> some text info about site and 31px height img </div>
Problem that I having is that Article not only can be random height size but also there is ajax block of random size content going after it and I simply can't absolutely stick bottom div to stay in bottom after all content regarding browser window size, content size, ajax block size...
Can any one help me with how css (I do not want to use jQuery to pin bottom block to a fix y coordinate) should look like for my pattern of use?

Answer 1

Make all blocks relatively positioned and give the heights and widths using percentage rather than pixels.
Make sure the sum of all your height percentages is 100%(in case you want to cover the whole screen).
This ensures your page content covers the whole screen, irrespective of the screen resolution.
The relative sizes of each block is also kept the same across all resolutions.
The key is to use PERCENTAGE values and not PIXEL values.
To solve the Dynamic sized article data, just CSS the article div to have a scroll bar.

Answer 2

this is currently does want i want
<style>
#block_buttom {
margin-top: 10pt;
/* z-index: -10; */
width: 100%;
display: inline-block;
height: auto;
clear: both;
}
.page-buffer {
padding-top: 50px inherit;
height: 50px;
clear: both;
width: 100%;
}
.clear {
clear:both;
font-size:0;
overflow:hidden;
}
#block_content {
width:100%;
text-align:center;
}
#block_left {
position: relative;
top: 0px;
text-align: left;
float:left;
width: 10%;
min-width:210px;
height: auto;
padding: 3px;
}
#block_center {
text-align: left;
display: inline-block;
margin:0 auto;
width:70%;
min-width: 640px;
height: auto;
padding: 3px;
}
#block_right {
position: relative;
text-align: left;
float:right;
width: 10%;
min-width:210px;
height: auto;
padding: 3px;
}
</style>
on high resolution it looking very nice, on lower - still require some tuning with finding balance of center block size and spaces between fixed size left\right blocks