/*
The 1400px on the content is wide enough to cover both the TOC and the actual help screen.
The 26vw and 66vw leave enough space to ensure that the two remain side-by-side on all browsers tested 
60 em is enough on the help content to show all dialogs and produce easily readable text.
*/

.content {
  max-width:1400px;
  margin:auto;
}
.toc {
  max-width:350px;
  width:26vw;
  height:98vh;
  float:left;
}
.help {
  max-width:60em;
  width:66vw;
  height:98vh;
  float:left;
}