* {
  box-sizing: border-box;
}

:root, body {
  margin:0;
  padding:0;
  height:100%;
  width:100%;
}

body {
  border-style:outset;
  border-width:2vw;
  display: flex;
  align-items:stretch;
}

body > div.column {
  flex-grow:1;
  display:flex;
  flex-direction:column;
  align-items:stretch;
  border-style:inset;
  border-width:2vw;
}

body > div.column > div {
  border-style:outset;
  border-width:1vw;
}

div#toolbar {
  
}

div#oil_panel {
  flex-grow:1;
}

div#formula_input {
  
}

div#formula_output {
  flex-grow:1;
}