.border-layout {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}
.border-layout .border-layout-pane {
  position: absolute;
  box-sizing: border-box;
  overflow: auto;
}
.border-layout .border-layout-overlay {
  z-index: 999;
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}
.border-layout.masked .border-layout-overlay {
  display: block;
  background-color: transparent;
}
.border-layout .border-layout-pane.north {
  top: 0;
  left: 0;
  right: 0;
}
.border-layout .border-layout-pane.south {
  left: 0;
  right: 0;
  bottom: 0;
}
.border-layout .border-layout-pane.west {
  top: 0;
  left: 0;
  bottom: 0;
}
.border-layout .border-layout-pane.east {
  top: 0;
  right: 0;
  bottom: 0;
}
.border-layout .border-layout-pane.center {
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}