Angular Material Layout

HTML

<link rel="stylesheet" href="https://rawgit.com/angular/bower-material/master/angular-material.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.6/angular.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.6/angular-animate.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.6/angular-aria.js"></script>
<script src="https://rawgit.com/angular/bower-material/master/angular-material.js"></script>
<div ng-app="sandbox">

  <div class="myfill">
    <md-toolbar>
      toolbar
    </md-toolbar>

    <div class="main">
      <div class="firstColumn">
        <div class="header1">
          first column header 1
        </div>
        <div class="header2">
          first column header 2
        </div>
        <div>
          first column content
        </div>
      </div>
      <div class="secondColumn">
        <div class="header3">
          second column header 1
        </div>
        <div class="header4">
          second column header 2
        </div>
        <div>
          second column content: could be really really long, or really really short... needs a scrollbar if long, and for the background to still fill the page if not long.
        </div>
        <br>
        <div>

          Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas
          sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora
          incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi...

CSS

.main {
  height: calc(100%-64px);
  position: absolute;
  bottom: 0;
  top: 0;
  width: 100%;
}

.md-toolbar {
  background-color: black;
  height: 64px;
}

.myfill {
  position: absolute;
  bottom: 0;
  top: 0;
  width: 100%;
}

.firstColumn {
  height: 200px;
  width: 100%;
  background-color: green;
  position: absolute;
}

.secondColumn {
  background-color: red;
  bottom: 0;
  top: 200px;
  position: absolute;
  overflow-y: auto;
  width: 100%;
}

.header1,
.header3 {
  height: 64px;
}

.header2,
.header4 {
  height: 28px;
}

JavaScript

angular.module('sandbox', ['ngMaterial']);