html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  display: flex;
  flex-direction: row;
}

.left {
  width: 300px;
  border-right: 2px solid gray;
  
  display: flex;
  flex-direction: column;
}

.editor {
  height: 0;
  flex-grow: 1;
  
}

.node_link {
  width: 0;
  flex-grow: 2;
}

.matrix {
  height: 300px;
  border-top: 2px solid gray;
}