titlebar.css

html.linux #titlebar {display: none;}
html.mac #titlebar {display: none;}

#titlebar {
  display: block;
  position: fixed;
  height: 33px;
  width: 100%;
  background: transparent;
  top: 0px;
  left: 0px;
  -webkit-app-region: drag;
  color: #FFF;
  z-index: 1;
}

#window-title span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.5;
}

#window-controls {
  display: grid;
  grid-template-columns: repeat(3, 46px);
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  z-index: 1000;
}

#window-controls {
  -webkit-app-region: no-drag;
}

#window-controls .button {
  grid-row: 1 / span 1;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}

@media (-webkit-device-pixel-ratio: 1.5), (device-pixel-ratio: 1.5),
(-webkit-device-pixel-ratio: 2), (device-pixel-ratio: 2),
(-webkit-device-pixel-ratio: 3), (device-pixel-ratio: 3) {
  #window-controls .icon {
    width: 10px;
    height: 10px;
  }
}

#window-controls .button {
  user-select: none;
}

#window-controls .button:hover {
  background: rgba(255,255,255,0.1);
}

#window-controls .button:active {
  background: rgba(255,255,255,0.2);
}

#close-button:hover {
  background: #E81123 !important;
}

#close-button:active {
  background: #F1707A !important;
}
#close-button:active .icon {
  filter: invert(1);
}

#min-button {
  grid-column: 2;
}
#max-button, #restore-button {
  grid-column: 2;
}
#close-button {
  grid-column: 3;
}