CSS: height- fill out rest of div?

Question

i wonder if this is possible with simple css or if i have to use javascript for this?

i have a sidebar on my website. a simple div#sidbar it\'s normally about 1024px

Answer 1

Sometimes a workaround might be:

#rest {
  height: 100%;
  padding-bottom: 200px;
}

The div itself will be too high, but because of the padding its content will have the right height.