html, body {
	margin: 0;
	padding: 0;
	overflow: hidden;
svg {
	background: #cfe8ff;
}

.prefecture {
    stroke: #222;
    stroke-width: 0.3px;
	stroke-linecap: round;
    pointer-events: all;
    transition: stroke 0.15s, stroke-width 0.15s, fill 0.2s ease-out;
  }

  .prefecture:hover {
	  stroke: "#ffffff";
	  stroke-width: 0.7;
  }

  .selected {
    fill: #ffd27f;
	stroke: "#ff8800";
	stroke-width: 1;
  }

  /* Tooltip */
  .tooltip {
    position: absolute;
    padding: 4px 8px;
    background: rgba(0,0,0,0.75);
    color: white;
    border-radius: 4px;
    font-size: 13px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s ease-out;
  }

  /* Reset button */
  #reset-zoom {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 8px 12px;
    background: white;
    border: 1px solid #ccc;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
  }
  #reset-zoom:hover {
    background: #f0f0f0;
  }