css height with %

[keko2005]

hey guys. how come when i use height:100% for a div id it doesnt work. when i use width:100%; that works proper. what am i doin wrong?

here the css code;

body{
margin:0px;
background-color:#f65a1d;
}

div#main_container{
width:80%;
height:100%;
background-color:#FFFFFF;
}

[keko2005]

got it. was the doc type that was messing it up

[Kravvitz]

It's because width and height work differently in CSS.

What doctype are you using now?