body {
  margin: 0;
  background: #eee;
  position: absolute;
  top: 50px;
  left: 50px;
}

svg {
    
  position: absolute;
  top: 50%;
  left: 40%;
  border: 1px solid #ccc;
  width: 600px;
  height: 400px;
  
}


button {
  margin-bottom: 20px;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}

polygon.flecha {
  fill: darkorange;
  stroke: #a0522d;
  stroke-width: 1;
}