How to fill 100% of remaining height?

css, fill, height, html

Solution

You should be able to do this if you add in a div (`#header` below) to wrap your contents of 1.

If you float `#header`, the content from `#someid` will be forced to flow around it.

Next, you set `#header`'s width to 100%. This will make it expand to fill the width of the containing div, `#full`. This will effectively push all of `#someid`'s content below `#header` since there is no room to flow around the sides anymore.

Finally, set `#someid`'s height to 100%, this will make it the same height as `#full`.

JSFiddle

HTML

<div id="full">
    <div id="header">Contents of 1</div>
    <div id="someid">Contents of 2</div>
</div>

CSS

html, body, #full, #someid {
  height: 100%;
}

#header {
  float: left;
  width: 100%;
}

Update

I think it's worth mentioning that flexbox is well supported across modern browsers today. The CSS could be altered have `#full` become a flex container, and `#someid` should set it's flex grow to a value greater than `0`.

html, body, #full {
  height: 100%;
}

#full {
  display: flex;
  flex-direction: column;
}

#someid {
  flex-grow: 1;
}

Problem

``` +--------------------+ | | | | | | | | | 1 | | | | | | | | | +--------------------+ | | | | | | | | | 2 | | | | | | | | | +--------------------+ ``` Contents of (1) as shown above are unknown, as it may increase or decrease in dynamically generated pages. The second div (2) as shown above, should fill the remaining space. here is an example of my html ``` <div id="full"> <!--contents of 1 --> <div id="someid"> <!--contents of 2 --> </div> </div> ``` css... ``` #full{width: 300px; background-color: red;} #someid{height: 100%;} ``` Or is this method wrong? How should I do this? please see my demo and show me my mistake.

Original source

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