Multi div combined height 100%, one div with static height - css

Question

I have what seems to be a simple css question but having difficulty achieving. I have 2 divs that sit one on top of the other. I would like the combined height of both divs to be 100% but the top to be a static defined height. The bottom div will contain a list of data that will overflow to scroll. What is the best way to achieve this? Below is sample code for something close.
#container{
height:auto;
height:100%;
min-height:100%;
}
#top{
height:175px;
min-height:175px;
max-height:175px;
}
#bottom{
height:70%;
}
<div id="container">
<!-- top div set to 100px -->
<div id="top"></div>
<!-- bottom div dynamic height based on remaining real estate -->
<div id="bottom"></div>
</div>

Answer 1

You could use CSS calc(), so #bottom {height:calc(100% - 175px);}.
html, body {
height:100%;
margin:0;
}
#container {
height:100%;
}
#top {
height:175px;
background:lime;
}
#bottom {
height:calc(100% - 175px);
background:teal;
}
<div id="container">
<div id="top">top</div>
<div id="bottom">bottom</div>
</div>
Or use CSS table layout if you need to support more browsers.
html, body {
height:100%;
margin:0;
}
#container {
height:100%;
width:100%;
display:table;
}
#top, #bottom {
display:table-row;
}
#top {
height:175px;
background:lime;
}
#bottom {
height:100%;
background:teal;
}
<div id="container">
<div id="top">top</div>
<div id="bottom">bottom</div>
</div>

Answer 2

You can use height:calc(100% - 175px); for this:
http://jsfiddle.net/9ygz4pnj/
html,body,#container{
height:100%;
}
#top{
height:175px;
border:1px solid red;
}
#bottom{
height:calc(100% - 175px);
border:1px solid green;
}

Answer 3

You can achieve this by defining a height and min-height on your containers.
First of all you need to define a height: 100% in your body (and html).
Than you need to create a container div which will be the mother of your top and bottom divs.
Than use position: relative and min-height: 100% in your container div.
You can align your top div to top: 0 and left: 0 a definite height and position absolute.
You can align your bottom div to bottom: 0 and left: 0 a calc function and position absolute. For the content scrolling part in bottom div use overflow scroll.
JSFiddle Example
Right now, I am using a french (or german keyboard) which is quite hard for me to use. I will edit the answer with a more meaningful text when I return home.
This is a basic css file that you can use.
html, body { height: 100%; margin:0; }
.container {
position: relative;
min-height: 100%;
}
.top {
background: black;
color: white;
height: 200px;
width: 100%;
position: absolute;
top: 0;
left: 0;
}
.bottom {
position: absolute;
bottom: 0;
left: 0;
background: yellow;
height: calc(100% - 200px);
overflow: scroll;
}