范围滑块-如何在轨道上添加垂直线？

<input type="range" min="0" max="100" value="50" class="slider" id="myRange">

.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 10px;
  background: #d3d3d3;
  outline: none;
  opacity: 0.7;
  -webkit-transition: .2s;
  transition: opacity .2s;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: #4CAF50;
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: #4CAF50;
  cursor: pointer;
}

var slider = document.getElementById("myRange");
var track = slider.querySelector("::-webkit-slider-runnable-track");

// 添加垂直线
var line = document.createElement("div");
line.style.position = "absolute";
line.style.width = "2px";
line.style.height = "100%";
line.style.background = "red";
line.style.left = "50%"; // 根据需要调整位置
track.appendChild(line);