html - div height 100 percent

Question

<img id='imgT' src="...">

<div id="divL"></div>
<div id="divR"></div> 

css

body{
    max-width:1024px;
}
#imgT{
    width:100%;
    border:thin solid blue;
    display:block;
}
#divL{
    width:20%;
    height:100px;  // I need 100%
    background:#008080;
    float:left;
}
#divR{
    width:80%;
    height:100px;  // I need 100%
    background:blue;
    float:left;
}

fiddle is here

So, how can I make the two divs height 100 percent, i.e. from the bottom of image to the bottom of page.

Answer 1

You need to set the height of html and body to 100% too before. Then you can set your element height 100%.

body, html {
    height: 100%;
}

#divL, #divR {
    height: 100%;
}

Updated fiddle.