shell.css

window {
  min-width: 300px;
  min-height: 300px;
}

window[os=unix] {
  -moz-appearance: menubar;
}

window[os=osx] {
  -moz-appearance: dialog;
  -moz-window-dragging: drag;
}

window[os=windows] {
  -moz-appearance: -moz-win-borderless-glass;
}


@media (-moz-mac-yosemite-theme) {
  window[os=osx] {
    -moz-appearance: -moz-mac-vibrancy-light;
  }
}

window:not([draw-in-titlebar]) #titlebar {
  display: none;
}

window[draw-in-titlebar=true] #titlebar {
  -moz-binding: url("chrome://global/content/bindings/general.xml#windowdragbox");
  -moz-window-dragging: drag;
}

window[draw-in-titlebar=true][os=osx] #titlebar {
  margin-bottom: -39px;
  min-height:  39px;
}

window[draw-in-titlebar=true][os=windows] #titlebar {
  margin-bottom: -16px;
}

#titlebar-buttonbox {
  -moz-appearance: -moz-window-button-box;
}

window[os=osx] #titlebar-buttonbox {
  margin-top: 11px;
}


window[os=windows] #titlebar-buttonbox-container {
  -moz-box-direction: reverse;
}

window[os=windows] #titlebar-spacer {
  pointer-events: none;
}


iframe,
browser {
  display: -moz-box;
  -moz-box-flex: 1;
  border-width: 0;
  background: transparent;
}

#init {
  margin: 40px;;
  padding: 40px;
  font: -moz-field;
  color: black;
  background-color: white;
}

#init input {
  width: 100%;
}