xyflow/packages/core/src/styles/init.css

/* these are the necessary styles for React Flow, they get used by base.css and style.css */
.react-flow__container {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

.react-flow__pane {
  z-index: 1;
  cursor: grab;

  &.dragging {
    cursor: grabbing;
  }
}

.react-flow__viewport {
  transform-origin: 0 0;
  z-index: 2;
  pointer-events: none;
}

.react-flow__renderer {
  z-index: 4;
}

.react-flow__selectionpane {
  z-index: 5;
}

.react-flow__nodesselection-rect:focus,
.react-flow__nodesselection-rect:focus-visible {
  outline: none;
}

.react-flow .react-flow__edges {
  pointer-events: none;
  overflow: visible;
}

.react-flow__edge-path,
.react-flow__connection-path {
  stroke: #b1b1b7;
  stroke-width: 1;
  fill: none;
}

.react-flow__edge {
  pointer-events: visibleStroke;
  cursor: pointer;

  &.animated path {
    stroke-dasharray: 5;
    animation: dashdraw 0.5s linear infinite;
  }

  &.inactive {
    pointer-events: none;
  }

  &.selected,
  &:focus,
  &:focus-visible {
    outline: none;
  }

  &.selected .react-flow__edge-path,
  &:focus .react-flow__edge-path,
  &:focus-visible .react-flow__edge-path {
    stroke: #555;
  }

  &-textwrapper {
    pointer-events: all;
  }

  &-textbg {
    fill: white;
  }

  .react-flow__edge-text {
    pointer-events: none;
    user-select: none;
  }
}

.react-flow__connection {
  pointer-events: none;

  &.animated {
    stroke-dasharray: 5;
    animation: dashdraw 0.5s linear infinite;
  }
}

.react-flow__connectionline {
  z-index: 1001;
}

.react-flow__nodes {
  pointer-events: none;
  transform-origin: 0 0;
}

.react-flow__node {
  position: absolute;
  user-select: none;
  pointer-events: all;
  transform-origin: 0 0;
  box-sizing: border-box;
  cursor: grab;

  &.dragging {
    cursor: grabbing;
  }
}

.react-flow__nodesselection {
  z-index: 3;
  transform-origin: left top;
  pointer-events: none;

  &-rect {
    position: absolute;
    pointer-events: all;
    cursor: grab;
  }
}

.react-flow__handle {
  position: absolute;
  pointer-events: none;
  min-width: 5px;
  min-height: 5px;

  &.connectable {
    pointer-events: all;
    cursor: crosshair;
  }

  &-bottom {
    top: auto;
    left: 50%;
    bottom: -4px;
    transform: translate(-50%, 0);
  }

  &-top {
    left: 50%;
    top: -4px;
    transform: translate(-50%, 0);
  }

  &-left {
    top: 50%;
    left: -4px;
    transform: translate(0, -50%);
  }

  &-right {
    right: -4px;
    top: 50%;
    transform: translate(0, -50%);
  }
}

.react-flow__edgeupdater {
  cursor: move;
  pointer-events: all;
}

.react-flow__panel {
  position: absolute;
  z-index: 1000;
  margin: 15px;

  &.top {
    top: 0;
  }

  &.bottom {
    bottom: 0;
  }

  &.left {
    left: 0;
  }

  &.right {
    right: 0;
  }

  &.center {
    left: 50%;
    transform: translateX(-50%);
  }
}

.react-flow__attribution {
  font-size: 10px;
  background: rgba(255, 255, 255, 0.5);
  padding: 2px 3px;
  margin: 0;

  a {
    text-decoration: none;
    color: #999;
  }
}

@keyframes dashdraw {
  from {
    stroke-dashoffset: 10;
  }
}