message: project header positioning
diff: .header {
  border-bottom: 1px solid #CECECE;
  padding: 2px;
  + display: flex;
  + align-items: center;
  }
  .header .title {
  font-size: 16px;
  cursor: pointer;
  min-width: 150px;
  + flex-grow: 1;
  }
  .header:hover .title {
  